Malicious PDF — malware analysis report

Static analysis result for SHA-256 65151f105ee705a9…

MALICIOUS

PDF

65.0 KB Created: 2021-02-22 05:39:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61ea59813a531490bc3232725db11c3b SHA-1: dfcbcefe26c2f5999679c11fe3d121ded3569cd4 SHA-256: 65151f105ee705a94e08a2435f7cd4b77c831e34af0a7c796350a40cc7dc0f52
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of numerous external URLs points towards a phishing or redirection attack, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=ccbetter+action+camera+manual
    • http://trackcreditscore.info/insanity_flyff_collector_guide1sz67.pdf
    • https://static.s123-cdn-static.com/uploads/4369146/normal_5fee87c1b8b8b.pdf
    • https://luxexawasoju.weebly.com/uploads/1/3/4/1/134109261/2692573.pdf
    • https://namevixezevir.weebly.com/uploads/1/3/0/9/130969021/riziwo.pdf
    • https://nizidisifa.weebly.com/uploads/1/3/4/5/134505067/zuleganamina.pdf
    • http://help-verifiedbadgecenter.com/89424828116xofxh.pdf
    • https://vapatukubarokul.weebly.com/uploads/1/3/0/7/130739856/mugedib.pdf
    • https://static.s123-cdn-static.com/uploads/4474999/normal_5ff60df34bc6e.pdf
    • https://cdn-cms.f-static.net/uploads/4419640/normal_5fd3d17379092.pdf
    • https://cdn-cms.f-static.net/uploads/4388158/normal_5fe8103c6cbc6.pdf
    • http://shoop-fe.ru/79429254261y2ng3.pdf
    • https://sujezebaxoxil.weebly.com/uploads/1/3/4/3/134316131/9813571.pdf
    • https://divevuke.weebly.com/uploads/1/3/3/9/133999966/1649116.pdf
    • https://ledajesaler.weebly.com/uploads/1/3/4/0/134041179/gonotekupibipifadof.pdf
    • https://fejiwapofiji.weebly.com/uploads/1/3/4/6/134699364/7e79c34eacdc15.pdf
    • https://loxogekero.weebly.com/uploads/1/3/4/0/134040689/8248ac6d6.pdf
    • http://rbqjkwklnd.xyz/aging_society_and_the_life_course_fifth_edition0nmlv.pdf
    • https://bodonovovo.weebly.com/uploads/1/3/1/6/131607174/lalekagebaxegi_bofifibe_sitadaxiwuboxe_jovod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pisik/nafabuwipezadonijuse.pdf
    • https://s3.amazonaws.com/levovod/sora_anti_form_kingdom_hearts_3.pdf
    • https://s3.amazonaws.com/padadutiseni/71047589480.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c224.bin
fbdde3143f0062e44270ab5d772d54072b5190b69bc46338ceae3dd276e22b86		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC224 4812 bytes
font_01_sfnt_off0000d263.bin
935aef2cd6f92b13c15a09fa59ffed4fe2ec6ffcd409a841fc1819aa91589d2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD263 10164 bytes

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