Malicious PDF — malware analysis report

Static analysis result for SHA-256 72298ed107fb6bdf…

MALICIOUS

PDF

68.8 KB Created: 2020-11-25 11:41:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c293a3fbdd660d15e3d3be6a6a313c6b SHA-1: 78c5841b6577f9e21b32b72d65ba65fd1055340f SHA-256: 72298ed107fb6bdf50b43d353991ec903b2f408bfb031ded4d30ef804222ca6f
186 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. The presence of a URL with 'utm_term=facebook+view+notification' indicates a lure to impersonate Facebook notifications. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • 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://traffking.ru/strik?utm_term=facebook+view+notification
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/4306422.pdf
    • https://niwejeru.weebly.com/uploads/1/3/4/3/134308800/nixitegilamije.pdf
    • https://kuxifegofemiza.weebly.com/uploads/1/3/4/8/134865321/porivikolu.pdf
    • https://goxanakevixi.weebly.com/uploads/1/3/4/8/134857001/wonezujorike.pdf
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bf4458.pdf
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/netajexotikawita.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8fffc438-a0b4-469c-bb73-986f8dcdbf6c/pizoxilaf.pdf
    • https://s3.amazonaws.com/bugutaj/29099510192.pdf
    • https://uploads.strikinglycdn.com/files/6a79db70-ffa8-42ac-9f6c-7b0a787f5b1d/the_masonic_bible.pdf
    • https://s3.amazonaws.com/liguwubore/timeline_templates_excel.pdf
    • https://uploads.strikinglycdn.com/files/f773fc38-e5d4-4668-9a7a-d74db7987426/afak_hesaplama_excel.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_off0000ce19.bin
273711bc972494f9aaaea3ab1dff9a81dddf5addf44ebb23c416578fde281e33		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE19 4880 bytes
font_01_sfnt_off0000deed.bin
38460554cf65acf392623be0231d85c466977fb615a6330609c41e6f7630e67d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEED 12024 bytes

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