Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3377c027ca54086…

MALICIOUS

PDF

102.6 KB Created: 2021-03-16 02:54:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 054ecb3a41dd6e4a0648754497b09b20 SHA-1: 58ddf773dd17f3f2476a29a927f21a75434f071a SHA-256: c3377c027ca54086a7dc8c1480b49eb63f946079cf7d48ba9aa378dbed29d7b8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • 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://fokemale.ru/wix?keyword=stress+eraser+manual PDF link annotation
    • http://storeeu.info/90124557552jyx7w.pdfIn PDF document text
    • http://chtotakoebezuz.biz/88375112481e3xw9.pdfIn PDF document text
    • http://zabunugakope.22web.org/pibujuxogaduke.pdfIn PDF document text
    • https://nutajutibasetak.weebly.com/uploads/1/3/4/6/134638930/lemibujig.pdfIn PDF document text
    • http://moitender.org/aladeen_mother_fuka_song_ringtonejqg8l.pdfIn PDF document text
    • https://mamowolo.weebly.com/uploads/1/3/4/7/134714390/b6abad51f.pdfIn PDF document text
    • http://piwifeg.22web.org/66550228831.pdfIn PDF document text
    • http://sisunazivajagu.iblogger.org/35394594331.pdfIn PDF document text
    • https://pedasivu.weebly.com/uploads/1/3/5/3/135387907/464d3cb382.pdfIn PDF document text
    • https://dewufore.weebly.com/uploads/1/3/4/8/134857007/gumorizipu.pdfIn PDF document text
    • http://albl.ru/41873234018bsu7u.pdfIn PDF document text
    • https://tomasuniraruz.weebly.com/uploads/1/3/5/3/135392941/xolikenawagutov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fivulesesixiji.epizy.com/taxonomy_affective_domain.pdfIn PDF document text
    • http://fasosusa.epizy.com/jegisixizezesaxu.pdfIn PDF document text
    • http://nibewisule.epizy.com/what_are_the_stages_of_grief_and_loss.pdfIn PDF document text
    • https://c301b42c-deab-4116-afcd-a09dd0728425.filesusr.com/ugd/4bb894_71249a62b23f43308413f05c4694a60d.pdf?index=trueIn PDF document text
    • http://tixuranezusox.epizy.com/deliberao_cee_73_2020.pdfIn PDF document text
    • http://xujariju.epizy.com/newop.pdfIn PDF document text
    • http://mukovixajetunex.epizy.com/dorinetosaginugaxomav.pdfIn PDF document text
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_4a0c9b9c017b48fcb563f1c7fe6b941e.pdf?index=trueIn PDF document text
    • http://vagujawub.epizy.com/fosijapidovibopotumurugu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14209 4764 bytes
SHA-256: aadbc412531d543dc926b8e3bce37eea247cbdc1544d17121af76551bc7b09d0
font_01_sfnt_off000152be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152BE 4932 bytes
SHA-256: 901c69eda106cbe78e53209048554f5e9dbf1032a5c88ee7f36c1e2e6fae129b
font_02_sfnt_off00016365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16365 11984 bytes
SHA-256: b655254ffb144f1e41319a1134bd12f56614105fb6f1bf940b2ca1a4f453958a

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