Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d10853155c2dd9…

MALICIOUS

PDF

72.4 KB Created: 2021-06-05 23:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 25bb0d4e2679178a5f21856bd1d6aaa2 SHA-1: ebe09f152f77ad4f470da1834713c75012d6acf9 SHA-256: 60d10853155c2dd9f8da56a230a787a19c381429d1ed2b5809f879eba1107046
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 0.9996

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://smidgel.ru/pbw?utm_term=hyne+timber+annual+report PDF link annotation
    • https://rimimasosonajis.weebly.com/uploads/1/3/2/6/132681992/8167885.pdfIn PDF document text
    • https://kewalagaxed.weebly.com/uploads/1/3/4/8/134864879/zepulonegepuxej-wuwabikuj-ruroze-benof.pdfIn PDF document text
    • https://lidugozomamaxo.weebly.com/uploads/1/3/1/6/131606349/tudabolamelofip.pdfIn PDF document text
    • https://deluwibenarut.weebly.com/uploads/1/3/1/3/131382693/eef0cc2bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501998/normal_6001563a5784d.pdfIn PDF document text
    • https://kanexunife.weebly.com/uploads/1/3/2/6/132681916/riradapanuv_keburi_vifiru_bigutilukadu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463808/normal_605007359b86b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389797/normal_604f5f5cbfb68.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dewubuk.pbworks.com/w/file/fetch/144657627/pokajuloni.pdfIn PDF document text
    • http://zepupifob.pbworks.com/w/file/fetch/144671703/sotukage.pdfIn PDF document text
    • http://zezimin.pbworks.com/w/file/fetch/144412407/islamiat_general_knowledge_mcqs_in_urdu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d238380-513c-4319-9862-ad22e886327f/996112159.pdfIn PDF document text
    • http://zajozote.pbworks.com/f/xiduramejisexiba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae6a0f26-2038-4dae-97d3-56952eaf04f8/red_storm_rising_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/437119cd-7010-42fa-bd63-4c84a35cb84e/asus_m5a97_le_r2_0_specifications.pdfIn PDF document text
    • http://zekodunu.pbworks.com/w/file/fetch/144463764/kolay_beat_yapma_sitesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fe71653-6b83-4ef9-8d4f-c3864bc60cec/pivimezuxewakifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/defa819e-2bc5-4d81-9ee0-3f323ad18259/pumozawogejepugow.pdfIn PDF document text
    • http://tagexoba.pbworks.com/w/file/fetch/144423237/r_programming_for_data_science_by_roger_peng.pdfIn PDF document text
    • http://wixugigir.pbworks.com/w/file/fetch/144608361/cant_pair_my_skullcandy_headphones.pdfIn PDF document text
    • http://xuruzinijub.pbworks.com/f/lolozatojopanirapitanar.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_off0000dde5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE5 4988 bytes
SHA-256: e1808982410e8a4ad04683d46dd55ed5168b52314630a193d43d11553ffa9f46
font_01_sfnt_off0000eec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC3 11008 bytes
SHA-256: 1599ec81b89998f19db66907fb4db02ff6f3fc3918af805cc5eb5b1c672e0f36

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