Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ca554affe8a2a6…

MALICIOUS

PDF

73.1 KB Created: 2021-03-20 17:26:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5c384eb218fc492ca48a7056422a07e4 SHA-1: 25d0e2e8529c7f52d8694a8d0065b565f2813672 SHA-256: 80ca554affe8a2a61e47e4417d22085dd23e9aff383fe6bfe39cb0d4058f40db
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://golowaki.ru/award?keyword=biji+apomiksis+pdf PDF link annotation
    • https://cdn.sqhk.co/fokigegoma/ughgfTB/pawitipubumaxojekilev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477408/normal_600bcd7a9a267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457839/normal_5fe9751fd176e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497368/normal_5fdfc5cc35194.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_6040f1a57ac96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408601/normal_601a3cbc10f88.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/4ihlOje/56554968317.pdfIn PDF document text
    • http://golden-bridge.pro/waxapakozatokibojm8xd0.pdfIn PDF document text
    • http://mon-cmbretagne.com/49957356440w32op.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471686/normal_600257484eeca.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/c8ibjim/age_of_conquest_iv_unlock_apk.pdfIn PDF document text
    • http://byt-upak.ru/traditional_japanese_girl_dress_updzy7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450034/normal_603e38d0aed92.pdfIn PDF document text
    • http://dresdenpharma.ru/14284920034a6ss2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448540/normal_6024213b8193a.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/DAGjhii/64180396463.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/c21dd5ea-e1e4-497d-b144-ec316028842c/79235639412.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/dujaxoxagijozokofozogav.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/abhimaan_movie_song_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/clasificacin_y_propiedades_de_los_nmeros_reales_ejemplos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee22c33a-f285-45d5-b303-09e47541bd63/90302630585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69a15f74-a578-4aa9-b34d-04e4da11f700/why_are_my_beats_connected_but_no_sound.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_off0000e00c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00C 5248 bytes
SHA-256: ba9de55ea6faa4f413f997e7adad2762723c86984643403c8235e0e388079774
font_01_sfnt_off0000f1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E2 11064 bytes
SHA-256: 8d6300cae40b85922e51b112c01534ea7d78cce1fe4d58d025d2ea30a239eb02

Open this report in the interactive analyzer, or submit your own file for analysis.