Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d708be2ec97982e…

MALICIOUS

PDF

82.4 KB Created: 2021-06-02 11:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 465e8d9dfb9a11f8bb640733de5a4a1d SHA-1: c09e9745fbb8ed1047d07d66b1ad15925a5c05d1 SHA-256: 0d708be2ec97982ec11049bc627ec9f6921bb45569f76c5976de56299c7ac44e
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 0.9993

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://botokaw.ru/123?utm_term=english+to+french+phrases+pdf PDF link annotation
    • https://tujemodi.weebly.com/uploads/1/3/5/3/135301643/1296d0bbf1e.pdfIn PDF document text
    • https://xowivana.weebly.com/uploads/1/3/0/8/130813667/baxamepevem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463002/normal_5ffd5b08e83bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392872/normal_5fd324e62c514.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379359/normal_600895f1c4456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461766/normal_604cd2524eed9.pdfIn PDF document text
    • https://danerukanem.weebly.com/uploads/1/3/1/3/131398025/titigezujubuzul.pdfIn PDF document text
    • https://zikazofikadit.weebly.com/uploads/1/3/0/7/130739129/kadun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499651/normal_603200ba9e56f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bekivuxuga.pbworks.com/f/vobumo.pdfIn PDF document text
    • http://vadibun.pbworks.com/w/file/fetch/144438945/what_happens_when_you_cry_too_much_when_you_pregnant.pdfIn PDF document text
    • http://zajozote.pbworks.com/w/file/fetch/144476337/how_to_activate_pf_account_without_uan_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a53433d-710b-4316-b5be-b69a3d8fdaf4/99907262405.pdfIn PDF document text
    • http://wikoborumun.pbworks.com/f/demonstrative_pronouns_worksheet_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c93b6d07-9c5d-4f34-bb85-9d1f9e2c4c78/73211762730.pdfIn PDF document text
    • http://vogituvu.pbworks.com/f/sawuwaxevonefivorevu.pdfIn PDF document text
    • http://viluxese.pbworks.com/f/contoh_judul_skripsi_akuntansi_pajak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d212a816-ae8b-4701-ac17-c3dac2560cc2/how_to_ignore_someone_you_love.pdfIn PDF document text
    • http://zupelapowi.pbworks.com/f/how_to_resign_on_jcpenney_kiosk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4523e8ac-37f2-4c26-92ed-42f92306b514/xuwelapowarugobudugoso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1664ac05-7539-47d9-965c-f05a70f90c4d/how_to_pair_lg_magic_remote_with_lg_sound_bar.pdfIn PDF document text
    • http://sikovifif.pbworks.com/f/what_happens_if_you_get_a_3_day_eviction_notice.pdfIn PDF document text
    • http://guronavageba.pbworks.com/f/how_to_use_singer_hand_crank_sewing_machine.pdfIn PDF document text
    • http://xetibubib.pbworks.com/f/86756844965.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10091 5376 bytes
SHA-256: 3584a108f7c9e7485f38891eab9bfd09d97e7c7dfe59502d5a1560baf46cb42e
font_01_sfnt_off000112dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112DD 12820 bytes
SHA-256: 3937c588a46a97fa9ef408b2e604a4cca0035233a5b4ca4cc6d16196e8b3e649

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