Malicious PDF — malware analysis report

Static analysis result for SHA-256 58208bb2c0aedd83…

MALICIOUS

PDF

79.1 KB Created: 2021-01-28 11:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b390c578c31b06ad5d519947eb2f1c6f SHA-1: 270ec1208ca055ba767b94bd35d3f96615cc335b SHA-256: 58208bb2c0aedd8327898544e5ad2a31493804babff0b4ac36159dec734a0dbd
134 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting services, and is flagged by ML classifiers and ClamAV as malicious phishing content. The embedded content, though heavily obfuscated, suggests a lure for downloading a game mod, aligning with phishing tactics. The presence of external URIs and the overall structure indicate an attempt to redirect the user to malicious sites, likely for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/wb?keyword=gunship%20battle%20total%20warfare%20mod%20apk PDF link annotation
    • https://gavuzolarot.weebly.com/uploads/1/3/4/4/134458525/00410e.pdfIn PDF document text
    • https://nibawomufexax.weebly.com/uploads/1/3/4/3/134371272/4758330.pdfIn PDF document text
    • https://bufibetotireguk.weebly.com/uploads/1/3/0/7/130739935/vimuwuburuwaba.pdfIn PDF document text
    • http://sellforce.ru/kyoto_autumn_colour_reportucb23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482869/normal_5ffdd7ba8f56d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450511/normal_5fe6461670f07.pdfIn PDF document text
    • https://sepuvoguzunisam.weebly.com/uploads/1/3/4/4/134488558/6880374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488574/normal_600aaa0286d7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465941/normal_5fd0b95c31559.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_5ff4e13b810a7.pdfIn PDF document text
    • https://wunanowadile.weebly.com/uploads/1/3/4/6/134600652/kekadizonidixup.pdfIn PDF document text
    • https://bozadabeduli.weebly.com/uploads/1/3/4/8/134869561/miwiwovafuzitededel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458628/normal_5ffb2c7972d0d.pdfIn PDF document text
    • http://help-igcopyright.xyz/318192716586hic3.pdfIn PDF document text
    • https://lebabipiw.weebly.com/uploads/1/3/0/9/130968925/bitarupomerul_fevekarajon_balatokelene.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417519/normal_5ff973970593b.pdfIn PDF document text
    • https://tedajurilazunu.weebly.com/uploads/1/3/0/7/130739962/mezexodusif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/jesidotanatikulab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9E 5608 bytes
SHA-256: 0860dc78d52620b39f03ed839df755b7fb2a101fe828fee441c69822a90cd23b
font_01_sfnt_off0000f292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF292 11136 bytes
SHA-256: 41e10dd689638951ef61c3369f4b96e487c4480b144f9a64b0c3dbf57b4c0ef9
font_02_sfnt_off000118d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118D1 16440 bytes
SHA-256: b4ff9a63d4c650bd8c0f7553f1250bc08f12fa586726a0ea69e1ac4b35ade120

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