Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f30102a0af1da5d…

MALICIOUS

PDF

76.3 KB Created: 2021-03-23 16:53:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bc01819ae84bcf39f2306dad1bbcf48c SHA-1: e55d99dd2d75c849579d9c822d40d774d8fff45e SHA-256: 3f30102a0af1da5dd132078e357a48234f363ef686c61b933c3759c479c30f80
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://dugedepap.ru/123?utm_term=sharingan+live+wallpaper+apk PDF link annotation
    • http://detonic-romania.website/dinijigupadekuxosugujc6ox.pdfIn PDF document text
    • http://4escam-bot.online/construction_project_log_book6ohtb.pdfIn PDF document text
    • http://sodalabs.club/how_old_is_the_lenovo_thinkpad_t4308s82z.pdfIn PDF document text
    • http://bigmagazin.xyz/note_speller_book_1_answerstucxw.pdfIn PDF document text
    • http://autobuff.xyz/97897781178y7gs2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448545/normal_602ee764d1395.pdfIn PDF document text
    • http://herss.space/pidexulirepomeje0hfn9.pdfIn PDF document text
    • http://karaulovlife.site/are_beats_solo_pro_better_than_airpods_progiu9f.pdfIn PDF document text
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/puxisiwesosumoczg2.pdfIn PDF document text
    • http://itabody.space/direct_and_indirect_characterization_worksheet_answers4k6y0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384144/normal_5fda4bde1d8e4.pdfIn PDF document text
    • http://meetsol.xyz/nodimajefapf3iba.pdfIn PDF document text
    • http://nature-ital.space/dixepepopidimuxigamkx8py.pdfIn PDF document text
    • http://krokoboko6.xyz/dadamevezirasalovoduwi252pn.pdfIn PDF document text
    • http://kvyovk.xyz/after_book_series_box_setsiu3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ab2ac9d4-4772-4872-829d-c19fde0a4f90.filesusr.com/ugd/b919b3_60c3358928f341018cdf5c6cdb466b8b.pdf?index=trueIn PDF document text
    • https://72a23b54-95c1-47c0-80d6-f7b1310faeb8.filesusr.com/ugd/65b209_291f3f50c7634cc2991b043fc86cd70b.pdf?index=trueIn PDF document text
    • https://0e818273-c791-4c7a-b20f-750474b78fe4.filesusr.com/ugd/362633_9b78ee71d5b64214a10908568e90af68.pdf?index=trueIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_51b5aecac2714c948d5a74866d4d6840.pdf?index=trueIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_14b9565f5fc04915be9f5109658a930a.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE957 5220 bytes
SHA-256: 35ace4e46f994e9bad3c49d83de90c0cd528b32ad8632c6da62a8e1eea42570a
font_01_sfnt_off0000fb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2A 12520 bytes
SHA-256: bec1bf61ade24f0a1d6bcf188e2f46d88b1546a28146020d7f221416b0327519

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