Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fd69bad480cd70…

MALICIOUS

PDF

81.9 KB Created: 2021-04-02 01:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4905b612f933bb81a4f8cf8d420abc04 SHA-1: 5939897eaeb7911d8c7bcca9e282964babc7633d SHA-256: 07fd69bad480cd7010b04c52de913a575601b052ef8d5cdce644f06e28c94e21
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 0.9998

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://jumiwimov.ru/strik?utm_term=how+to+service+lg+dual+inverter+ac PDF link annotation
    • https://posofipijetudu.weebly.com/uploads/1/3/1/3/131380531/zatawelefagesil-xepugogiwuve.pdfIn PDF document text
    • https://bafizotadax.weebly.com/uploads/1/3/4/7/134761596/bawupoz_zonogusogugi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415937/normal_604d79b84fba6.pdfIn PDF document text
    • https://poteboxamakimef.weebly.com/uploads/1/3/4/3/134325651/2160811.pdfIn PDF document text
    • http://magicwoolshop.com/7954944114m9qpu.pdfIn PDF document text
    • https://putojedenavaxo.weebly.com/uploads/1/3/2/6/132683165/barogibale_ritizexojal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486213/normal_600f30b29dd8e.pdfIn PDF document text
    • http://stav-games.ru/how_to_share_a_document_on_facebook_group88pvu.pdfIn PDF document text
    • http://sukujugonada.22web.org/porafomujukez.pdfIn PDF document text
    • https://pesadoxemanuz.weebly.com/uploads/1/3/4/8/134852899/4984475.pdfIn PDF document text
    • http://acgmgroup.ru/14840326667ewsat.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/lonozote/predator_8750_generator_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/fluke_177_digital_multimeter_price.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/vugulidutitebeluvemetizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b92d352-66c7-4caa-894d-04c4887cadf5/peavey_classic_30_footswitch_not_working.pdfIn PDF document text
    • http://lagefow.epizy.com/15836869622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe593e23-bb4c-4733-8452-754a278add1b/tuzixefukutubutupesan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/512f38f4-0e21-4a09-bd7b-24a8d982d4c7/why_my_subwoofer_is_not_working.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_off0000e97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97C 5220 bytes
SHA-256: 8ca4f12181895d49d47f28339e7027c1cab57cdd90503889784a066849d98f74
font_01_sfnt_off0000fb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5D 11416 bytes
SHA-256: c8fd0d54356cd9ad375c0d0beee42ff8a6ef5fb9f0e39096dad3b639622f1a56
font_02_sfnt_off00012294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12294 16612 bytes
SHA-256: 78ddde2c76ffdb76c75f08ddf64608f0d57c8d4826016e5e80e1f1b260409021

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