Malicious PDF — malware analysis report

Static analysis result for SHA-256 070e224da78654bf…

MALICIOUS

PDF

79.2 KB Created: 2021-03-20 17:48:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1ef0a7ee93d4c04fb8f89ad63841bd45 SHA-1: 59fae91cc20a99b32be9a1cab8e0bf764cbe0c81 SHA-256: 070e224da78654bf87d402080b6cf09746eb76787e2926e0a96c2bca66d63eab
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/strik?utm_term=simple+past+tense+exercises+multiple+choice+doc PDF link annotation
    • http://bestita.space/vilibixifagelikaroxakoy49i.pdfIn PDF document text
    • https://kukavijeri.weebly.com/uploads/1/3/3/9/133997324/2634325.pdfIn PDF document text
    • https://sagakoto.weebly.com/uploads/1/3/0/8/130814189/7900878.pdfIn PDF document text
    • https://wowaximemufa.weebly.com/uploads/1/3/1/4/131453960/2693347e67.pdfIn PDF document text
    • http://reform-st.ru/pujanawudixixowogiirdg2.pdfIn PDF document text
    • http://sreda.city/478010412247erxq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://ad9f1622-e3b7-49db-bfef-326c48fb2104.filesusr.com/ugd/a467d2_fdf33ad20a534325bab44a399c6abcc0.pdf?index=trueIn PDF document text
    • https://3176e400-c268-4dc0-8d69-08eae86937f8.filesusr.com/ugd/ea2f88_66a153f493554919812de8fcc31f690e.pdf?index=trueIn PDF document text
    • https://1f2f8e77-98df-4c5e-b88a-83bc2b612b58.filesusr.com/ugd/5c7528_b585d6bcba0944019f197f90856b73bc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/43202896594.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/aquatic_plants_and_animals_information.pdfIn PDF document text
    • https://3485775d-af35-4505-8fb4-f6750f575e04.filesusr.com/ugd/42f18e_a71b3eee711242baa46f503bf85fbbe8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/how_to_program_plc_controller.pdfIn PDF document text
    • https://4d75d3c9-3a4d-4df6-84ab-e48b83d723e5.filesusr.com/ugd/cdb50c_ec2c799c17fe4fc59f16aa14a4b0b697.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/figugipopar/fimota.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/blood_bowl_2020_lizardmen_roster.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/piwewadigod.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/google_sheets_add_ons_missing.pdfIn PDF document text
    • https://98be45bc-63b9-4117-aff7-84a3d4f2c4a0.filesusr.com/ugd/90c678_347581484c874eaf9a72b963ae39c467.pdf?index=trueIn PDF document text
    • https://874c0fd6-92eb-497b-905f-dc7ca4d2e287.filesusr.com/ugd/5ca7d4_dc6bdc25cc9d4d0c93875c193890c119.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE840 5364 bytes
SHA-256: 41c671ae89f44f979f7cfd65f65a518d72571dac24fecb32c6355e280b233555
font_01_sfnt_off0000fa3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3D 11420 bytes
SHA-256: a04563707dd518753ff8c404506642e5f7398af47d3d3f65cb5623dabc18016a
font_02_sfnt_off00011f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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