Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddb8b5dc176ab121…

MALICIOUS

PDF

74.7 KB Created: 2020-11-26 16:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ee50abdae5fc21f3d2a553a64fb0be70 SHA-1: b809dbff3fe9d01c28998481edf7f660974a877a SHA-256: ddb8b5dc176ab121f1f927608d5c24bceb7e05b7455b720dcc553c073e856e4a
244 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, indicating it's likely a phishing or trojan delivery mechanism. It contains a large number of links, many pointing to disposable hosting, and one critical link to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Total money makeover pdf free download', aiming to trick users into clicking malicious links.

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
  • 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://gettraff.ru/strik?utm_term=total+money+makeover+pdf+free+download In PDF document text
    • https://sakenudawajaka.weebly.com/uploads/1/3/4/5/134595508/verumidopawafo-vojemimulite-giwejunesal-sekirigujopipuj.pdfIn PDF document text
    • https://jujepuwajepoxox.weebly.com/uploads/1/3/4/4/134466337/lotejejopunux_jokoka.pdfIn PDF document text
    • https://refunijuxi.weebly.com/uploads/1/3/4/7/134748157/5848917.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/denununewojijikogor.pdfIn PDF document text
    • https://gusobenatidisa.weebly.com/uploads/1/3/4/4/134475091/1351674.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448535/normal_5fa8a906a791f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444095/normal_5f9c42246b609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374838/normal_5f8e27073996e.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/4094859.pdfIn PDF document text
    • https://fosuzotarodaduv.weebly.com/uploads/1/3/4/3/134391180/2239720.pdfIn PDF document text
    • https://gulijigomun.weebly.com/uploads/1/3/4/3/134350957/bowinamupizobi_kutipuruzitelu_volesekiwogat.pdfIn PDF document text
    • https://gasipepimajut.weebly.com/uploads/1/3/4/3/134367512/3716253.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/4255209.pdfIn PDF document text
    • https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/sakoba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/67c9cd0d-b959-4a1e-8850-f088a2fe6472/tawanovujowuroperoto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dffac1be-4052-4d47-afbc-98c2306ff67b/kavuniti.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C2 5016 bytes
SHA-256: e2232be231405e33bbf5f31b7472663fcae223a27fcfd9dc00c5429129e9266f
font_01_sfnt_off0000ead4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD4 10792 bytes
SHA-256: 1a169ef533ecd6d27a9658991b10cc0dcaa0f1f1c031247d2011d26550ca0ff6
font_02_sfnt_off00010fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAE 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378