Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f75c3a4a65a6354…

MALICIOUS

PDF

76.1 KB Created: 2021-02-18 10:09:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 854aa642d352620b439bf33b2c1b4f69 SHA-1: 7630075ec2ba4cd94f2b5e4e1b4af8bda198004d SHA-256: 1f75c3a4a65a63549f1a2d4dc653e29be57e2c9d6f81bfd6d28e012e2e54a1b6
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content or download further payloads.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/strik?utm_term=parrot+bluetooth+play+music+iphone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461495/normal_5fca5ba2d017b.pdfIn PDF document text
    • https://babobulelemin.weebly.com/uploads/1/3/5/3/135344535/kudile.pdfIn PDF document text
    • https://zokibiruxe.weebly.com/uploads/1/3/5/3/135326092/ec9d86e78c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497646/normal_60097d9e0a508.pdfIn PDF document text
    • https://zisifogadudup.weebly.com/uploads/1/3/4/7/134765868/388402.pdfIn PDF document text
    • https://sapobukemofox.weebly.com/uploads/1/3/5/9/135974899/1853307.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483867/normal_6019b000389d0.pdfIn PDF document text
    • https://jupikojeba.weebly.com/uploads/1/3/0/9/130968920/7731534.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475853/normal_600b06a8c4432.pdfIn PDF document text
    • https://piturerakilapes.weebly.com/uploads/1/3/0/7/130775197/3055042.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nefunupu/libafomasebetop.pdfIn PDF document text
    • http://vufilupirudote.rf.gd/lagilogudexume.pdfIn PDF document text
    • http://gufaxepelirub.rf.gd/dejaxivejos.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/toparobimuzavatasos.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/fafomiwefajubuwogijuwa.pdfIn PDF document text
    • http://bususetut.epizy.com/brute_force_attack_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/40809778049.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/gubabibufanipufivekorono.pdfIn PDF document text
    • http://pewetijugezam.rf.gd/uppababy_vista_bassinet_mattress_sheet.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_off0000ec39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC39 5416 bytes
SHA-256: e848e94c923c03fbdd1b2812b3c763aea5dbce835888788c05c6c0ce87be207c
font_01_sfnt_off0000fe7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7C 10780 bytes
SHA-256: a403d05382424d33dea2116053df0e09e5760f2a7f69cfda96b5e036e78814ed

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