Malicious PDF — malware analysis report

Static analysis result for SHA-256 86a54b0a54bdfbb9…

MALICIOUS

PDF

79.2 KB Created: 2021-03-15 10:07:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 090f4e4cef72553abbd18498f15cdb12 SHA-1: 8f80e41e28af0d73404e439e66f7af3ee6624971 SHA-256: 86a54b0a54bdfbb98e3c3f4549e1b1c21a5ca9f7f0680571b4c2b85e86e0b08f
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, many hosted on disposable domains, indicating a link farm or phishing attempt. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly suggest malicious intent. The embedded URLs, such as 'https://pelibifir.ru/strik?utm_term=call+of+duty+ps4+bundle+gamestop', are likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pelibifir.ru/strik?utm_term=call+of+duty+ps4+bundle+gamestop PDF link annotation
    • https://zuvoxowiton.weebly.com/uploads/1/3/0/8/130813332/taparavirisuga_poseze_dokuxuvam_padexowokareta.pdfIn PDF document text
    • https://verumoxozuvije.weebly.com/uploads/1/3/1/4/131407377/kuwujixupo.pdfIn PDF document text
    • https://damafofazawarag.weebly.com/uploads/1/3/4/3/134369947/zugabimu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497359/normal_5fe0c9dd17961.pdfIn PDF document text
    • https://pexafibilo.weebly.com/uploads/1/3/4/4/134484824/gevilurowesumaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476595/normal_602ba21b0f6d8.pdfIn PDF document text
    • https://gabonavokelog.weebly.com/uploads/1/3/4/6/134684269/nesejowidamo_wuwagimajawude_lidokojozu_wapag.pdfIn PDF document text
    • https://moxitason.weebly.com/uploads/1/3/4/3/134384587/jenisel.pdfIn PDF document text
    • https://fijuvosezo.weebly.com/uploads/1/3/4/0/134096395/wevene_tojepetiwokina_letajuposa.pdfIn PDF document text
    • https://ledijonag.weebly.com/uploads/1/3/4/6/134689342/6910230.pdfIn PDF document text
    • https://tedarotola.weebly.com/uploads/1/3/1/4/131482933/44ca047d2388f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406168/normal_603a1bdd0d580.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405654/normal_5ff57f2b6c8a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490251/normal_5fc7c7b6116a5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://4f65501f-cdae-4966-b9db-49b15ad9d196.filesusr.com/ugd/52b593_bf8a50c28fc44facb5c3b9b1a5426981.pdf?index=trueIn PDF document text
    • https://f85e9a30-dbb9-40fd-a66d-53bd7daafe07.filesusr.com/ugd/1b9faa_7561c007007d406784fad30a7f40b6e4.pdf?index=trueIn PDF document text
    • https://234a0c07-d908-4261-bb83-16b3c96a9b04.filesusr.com/ugd/73e0e6_e6db6f1f8fb34a36bf3d765f1641c933.pdf?index=trueIn PDF document text
    • https://700ceb37-22d2-47c5-9888-d858af679aee.filesusr.com/ugd/c345b0_cd7af53f284c4c09a3d298fa4662ce96.pdf?index=trueIn PDF document text
    • https://23751d96-d7b3-42ca-b8ca-e459b671ea95.filesusr.com/ugd/7de994_30f23efafd5248c1b035f93160cc022f.pdf?index=trueIn PDF document text
    • https://58552d80-c20c-4e4f-99b9-91bedbcc07a3.filesusr.com/ugd/c18496_abca0d6e0e084a12acf39a37a45ad4e3.pdf?index=trueIn PDF document text
    • https://a24bc4ef-4ee2-4fae-af0c-c9fea810b245.filesusr.com/ugd/67d96c_430bd22d95074b27bfb077c284dfdbfe.pdf?index=trueIn PDF document text
    • https://21319658-e817-4d6a-846f-872ccfe0f0c2.filesusr.com/ugd/982af2_c92fc3f22069415e9e5511db1781dbea.pdf?index=trueIn PDF document text
    • https://ea64ff4c-51e6-4efc-8cc1-399682447901.filesusr.com/ugd/961f18_d0e6809e7e1d4a9b96a3d3786abadb36.pdf?index=trueIn PDF document text
    • https://0df22b04-17ae-4e65-9af8-3af4445b4601.filesusr.com/ugd/71fd01_352f3bbe635e4a34a258782a4573568b.pdf?index=trueIn PDF document text
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_03e6a5fbdaa0413a871e46d6782dbdd0.pdf?index=trueIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_6a2de4f1ac234c9e8bce43665120388e.pdf?index=trueIn PDF document text
    • https://e0a971b2-7104-4718-9e5f-4f17d768618f.filesusr.com/ugd/6d43b6_7d512c3f639e4487959671c86f0764ba.pdf?index=trueIn PDF document text
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_540a1806d6cb431586f65c98ded10f98.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C7 5452 bytes
SHA-256: bcaf8fcbdd59f2f9f0a824ad32de205c1ec1456ff92bb641f5afddf974be25fe
font_01_sfnt_off0000f951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF951 11504 bytes
SHA-256: 63b75c234a3dd179c1fa3426dfc724259bfc1f411ac1ddc740645e5fa4a2e4d8
font_02_sfnt_off000120cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CF 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.