Malicious PDF — malware analysis report

Static analysis result for SHA-256 7555eaf945290543…

MALICIOUS

PDF

78.4 KB Created: 2021-01-06 23:57:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f1f10010500fae9874e86bf136074dc3 SHA-1: 90bcb97e5c0514b84cf3f8e1f8d05f20ddbe6325 SHA-256: 7555eaf945290543c11cd1be0c00f08a55006ee3ec84c7a4512006403a1f5b60
244 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are hosted on disposable domains and point to other PDFs, indicating a link farm designed to redirect users to malicious content. The primary lure appears to be 'Gta 5 v mod apk', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/123?utm_term=gta+5+v+mod+apk In PDF document text
    • https://lavabowigu.weebly.com/uploads/1/3/2/6/132682694/a2f933c178c40e5.pdfIn PDF document text
    • https://xurizuful.weebly.com/uploads/1/3/4/8/134898541/9839141.pdfIn PDF document text
    • https://gapefupekud.weebly.com/uploads/1/3/1/8/131871489/70c4906.pdfIn PDF document text
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/8848194.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/5583377.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/moleb.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/gixitodivuz_zatide_janeluresirozu_wixafisesifol.pdfIn PDF document text
    • https://rogifegupoxixo.weebly.com/uploads/1/3/4/0/134040774/3122216.pdfIn PDF document text
    • https://lijasefevofik.weebly.com/uploads/1/3/4/8/134889997/f8470352b6.pdfIn PDF document text
    • https://rumodabumuxe.weebly.com/uploads/1/3/1/8/131857513/gikip.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/7f18cac6-f28e-41fe-bfac-c98d4800dc62/76931775483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da1e467b-ba73-4c8d-b17e-f49a5f29f26e/where_have_you_gone_charming_billy.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_off0000f6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B6 5076 bytes
SHA-256: 351a79ba0a202c6c05287e3b9a27ff074791238b4d4b5389091b72908740d0e6
font_01_sfnt_off00010803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10803 11108 bytes
SHA-256: 759217cb9d40ef88d866d4e664fc9e1125d592a324b37dc5fd9c9a515827de31

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