Malicious PDF — malware analysis report

Static analysis result for SHA-256 69717f04c020e392…

MALICIOUS

PDF

78.1 KB Created: 2021-03-19 17:41:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0f7e6e217503bc2fa57b01085243f532 SHA-1: d9040a36f6a6f65402d832e1325d9dced33a7dd0 SHA-256: 69717f04c020e39253e8bc32c1db6f9e2c70887ecc106cd9b52b63af06ebfb2f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

Heuristics 6

  • 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.
  • 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://leonvi.ru/wix?keyword=download+dead+trigger+2+mod+apk+obb PDF link annotation
    • https://rafafokisot.weebly.com/uploads/1/3/4/7/134738004/tipibiludamew.pdfIn PDF document text
    • https://cdn.sqhk.co/neratimo/iiijid9/tuning_club_online_mod_apk_2020.pdfIn PDF document text
    • https://rujijixagav.weebly.com/uploads/1/3/1/3/131383475/a34ba16f13.pdfIn PDF document text
    • https://dixapixukezawe.weebly.com/uploads/1/3/5/3/135388261/malanimigipeza.pdfIn PDF document text
    • https://tapituxupali.weebly.com/uploads/1/3/1/3/131382330/5ad79f4c26c3c.pdfIn PDF document text
    • https://sunowakodi.weebly.com/uploads/1/3/2/8/132814938/4e0e9dab8e22a.pdfIn PDF document text
    • https://cdn.sqhk.co/xiroxozalal/gghj4hb/86049897347.pdfIn PDF document text
    • https://wibugosavuzatug.weebly.com/uploads/1/3/4/3/134349607/2284070.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/gFbjeib/keligubedinopewumet.pdfIn PDF document text
    • https://lulipelewofepo.weebly.com/uploads/1/3/0/8/130873877/zemawuvegu.pdfIn PDF document text
    • https://cdn.sqhk.co/jozunufap/Fhfql0M/tweencraft_cartoon_video_maker_animation_app.pdfIn PDF document text
    • https://cdn.sqhk.co/risevejuxik/gdjcof0/90739975249.pdfIn PDF document text
    • https://cdn.sqhk.co/zokuwagopole/ihimSDe/59516453337.pdfIn PDF document text
    • https://cdn.sqhk.co/kizafizutuw/gdujage/kokab.pdfIn PDF document text
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/0d2e6364d6.pdfIn PDF document text
    • https://mamowolo.weebly.com/uploads/1/3/4/7/134714390/gudag-nowisa-reluxawapul.pdfIn PDF document text
    • https://foxaxefaga.weebly.com/uploads/1/3/1/3/131398491/tosisuxokom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/865da40b-e957-4c1e-a12b-0f2923308ec9/1049226058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7653f863-f666-413b-86f3-679929464e1b/xoxozitovobisaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19c8abaa-4ec4-4db2-a9f4-f3549c771b48/midusojulazesiviparabij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73091e2b-3849-4b95-9ee6-33db08abf9cf/15401848161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21286ab1-b211-4f93-829b-fd8742600169/how_do_you_celebrate_end_of_year_virtually.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_off0000f19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19F 5528 bytes
SHA-256: 7f24a36d931b63b15dc15d137f3646d4e1d6e5412de560b449bd59ca88bde40c
font_01_sfnt_off0001046d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046D 11332 bytes
SHA-256: 367ba08474556d4c01829b203edf6bcd433849a5b05a44fb6027688a3eb50009

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