Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbfc0c9db50c3fa0…

MALICIOUS

PDF

75.0 KB Created: 2020-12-18 04:17:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3e05f1081dad5de7f4e55281e25932a4 SHA-1: 75b552abbb13b7f59d89eaf3f4c4d4d0ba276322 SHA-256: dbfc0c9db50c3fa0f95ab035381bee2d96d34e5668ba9e527eeed9cd8cf87447
184 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'traffine.ru'. The document body, though heavily obfuscated, suggests a lure related to 'fish tank lids'. The presence of numerous links to disposable hosting services further supports a phishing or scamming attempt. While no scripts were explicitly extracted, the nature of the redirector and the ML classification strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://traffine.ru/123?utm_term=fish+tank+lids+10+gallon In PDF document text
    • https://kenemujawov.weebly.com/uploads/1/3/4/6/134645985/dijimavul.pdfIn PDF document text
    • https://kabijefilomi.weebly.com/uploads/1/3/4/7/134761935/nulebanadej-ledigesenikexa-sogilerado-nitagisofe.pdfIn PDF document text
    • https://bemijojedir.weebly.com/uploads/1/3/4/4/134479802/xulivujafapumotil.pdfIn PDF document text
    • https://rigukolanerimi.weebly.com/uploads/1/3/4/5/134519373/6395958.pdfIn PDF document text
    • https://mitigovoponezix.weebly.com/uploads/1/3/4/3/134375948/6747879.pdfIn PDF document text
    • https://kaxojolomo.weebly.com/uploads/1/3/4/8/134885197/5673117.pdfIn PDF document text
    • https://nilesezijifata.weebly.com/uploads/1/3/4/8/134885493/4330711.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/demevawovobel-ruxez-kawoja-kelam.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/5365029a-8e2c-4e8b-b9cd-1996d7dbbc45/taco_bell_calories_grilled_cheese_burrito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/466d50a6-9bc1-4341-ae56-6bd418dafbbb/zinabivoliparuborofufob.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1771924b06a7eb3033110/t/5fc4a3ba7acac6192a544bb9/1606722490828/39501621472.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcea2d8151d800803c174b8/t/5fd63f3cde5b1220c0261401/1607876414766/jexafujagez.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/868674524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32065e10-9ee7-4dbd-82a1-9eafb82ca1f4/89195367458.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_off0000e8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BD 5204 bytes
SHA-256: 4026288011c99b53146a29c998f958d236c56903d083ee0321e487bfb8eca2d8
font_01_sfnt_off0000fa76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA76 10796 bytes
SHA-256: ca20f56a83e529db2e8d64ab46ddbf91a32f251678b1f07f7f09c59c896cc7a8

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