Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9980bdeed4604f8…

MALICIOUS

PDF

99.2 KB Created: 2021-02-14 19:18:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c460a36e080cbd629c76b73cc838f680 SHA-1: 401f27d992ee838ed35ac59e1bc2257fa13036fa SHA-256: a9980bdeed4604f8a188b488462120e5b4ea0c9d7dd44c32afe0cb0e0c99c754
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://baarspo.ru/123?utm_term=singer+tiny+serger+walmart PDF link annotation
    • https://poliradu.weebly.com/uploads/1/3/5/9/135991332/8808074.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/cuh0J6x/golixubifeburanaxa.pdfIn PDF document text
    • https://cdn.sqhk.co/bumogebiz/jXFid2W/ketifubejuxuxalofatu.pdfIn PDF document text
    • https://rorezumi.weebly.com/uploads/1/3/4/5/134591247/7b4dddb064.pdfIn PDF document text
    • https://cdn.sqhk.co/wevubuse/hcLAjf1/6169200189.pdfIn PDF document text
    • https://cdn.sqhk.co/fimirexuf/Hjfig9m/talking_ginger_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/dhbfja4/pocket_football_2.pdfIn PDF document text
    • https://zipuwuxa.weebly.com/uploads/1/3/4/3/134376087/ff600410.pdfIn PDF document text
    • https://gewolurigidanax.weebly.com/uploads/1/3/1/3/131383018/jebireb.pdfIn PDF document text
    • https://vokijovagugudis.weebly.com/uploads/1/3/0/7/130776016/pozajelusogekufidu.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/9a8d64c.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://s3.amazonaws.com/potofaw/2599118168.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/58059574771.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/what_could_have_been_done_better_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/canon_ipf770_scanner_manual.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114D0 4980 bytes
SHA-256: 9a019c8b1f9b5690b0bc5c1ad317e0b8e2faa48bec896f9cb20f4d38044e1134
font_01_sfnt_off000125a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125A2 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00012e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E30 13272 bytes
SHA-256: 352aa6459a19db2dfac2a1cd0ea3cd351b52d19d5381000c2a3e9181ba7c9b76
font_03_sfnt_off00015b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B90 16164 bytes
SHA-256: 4b52fd5da643d9c08cc0a86f773b2f024e3274f3f861dfcac100db1ef433cf06
font_04_sfnt_off0001708a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1708A 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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