Malicious PDF — malware analysis report

Static analysis result for SHA-256 714380b47569a789…

MALICIOUS

PDF

81.2 KB Created: 2021-03-16 01:16:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d40425c1310d7bdee6d4b3529f8ae4d2 SHA-1: b08e47cd2c4d324abf21baeb834b29f688f75c4b SHA-256: 714380b47569a7898e278f54cd120ab2438133388f10a29b735a1f23dc985170
186 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the PDF structure itself is indicative of a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/strik?utm_term=ion+mustang+lp+turntable+reviews PDF link annotation
    • https://cdn.sqhk.co/lawipavoso/jigcyhg/e_bike_rental_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/dupamotim/ijgj8jb/64065781187.pdfIn PDF document text
    • http://najisemure.medianewsonline.com/pathfinder_race_ability_score_chart.pdfIn PDF document text
    • https://tenosufude.weebly.com/uploads/1/3/1/4/131455069/minumijuger.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/napuno.pdfIn PDF document text
    • https://cdn.sqhk.co/wubukuxivupe/iegd2je/4323486936.pdfIn PDF document text
    • https://cdn.sqhk.co/xedomobedusi/HhaHgfN/50265987787.pdfIn PDF document text
    • https://cdn.sqhk.co/wizevomorofe/mggiiib/factory_for_avatar_apk.pdfIn PDF document text
    • https://gadebalemalun.weebly.com/uploads/1/3/4/4/134443756/b39ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6196a4e6-b3b5-4a85-a139-4ec84e0a53d9.filesusr.com/ugd/d01287_dc58888da45d49c19db25f27cd5ace16.pdf?index=trueIn PDF document text
    • http://japumuvepabez.rf.gd/bremen_stadtmusikanten.pdfIn PDF document text
    • https://86908e24-11f3-43a1-9346-bf531f45ee0b.filesusr.com/ugd/97493d_f68990f9e5d949ab8789c258d7f83168.pdf?index=trueIn PDF document text
    • https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_b6f83d61f96c46d5bac24523fbf6f03f.pdf?index=trueIn PDF document text
    • https://aabf49e0-5477-4fd2-8456-a986ef8f2a87.filesusr.com/ugd/9e14ca_1ca379c0d0f840e6b7c6b81f735f0385.pdf?index=trueIn PDF document text
    • http://xepolowamozuxan.rf.gd/affairscloud_pocket_may_2020.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10091 5368 bytes
SHA-256: 383ae6c88ed36203ee79b9b116762f526e6d0a97f22ad3379ef581541021c20f
font_01_sfnt_off000112ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112CA 10808 bytes
SHA-256: 7145e06d173bf131a4007799dbab2cbcd4d911f1c65aff8bb4ed716c5ef29d68

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