Malicious PDF — malware analysis report

Static analysis result for SHA-256 46f0a0487e374305…

MALICIOUS

PDF

76.8 KB Created: 2021-06-04 01:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 5844fc0c5a57d168df3c539883346438 SHA-1: e59ab75be0b4c617b98128127c787b75f252b5ca SHA-256: 46f0a0487e374305630aadd5ff8b1b00c827b2e75ad316da59338b51752eebe1
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable hosting, and uses a lure related to 'spotify account generator free'. This indicates a phishing or link-farming attack. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of malicious intent, likely leading to a phishing page or a download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • 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://wastran.ru/pbw?utm_term=spotify+account+generator+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370555/normal_5fdfda8bd84b7.pdfIn PDF document text
    • https://pazibeze.weebly.com/uploads/1/3/1/6/131636707/8063424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388280/normal_601d75af5b667.pdfIn PDF document text
    • https://zupuraba.weebly.com/uploads/1/3/5/3/135348036/joduko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371788/normal_60663e7e9a843.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424985/normal_6032c2ffda61f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478132/normal_5fe93bd3e8a11.pdfIn PDF document text
    • https://pikulevixabokof.weebly.com/uploads/1/3/1/6/131606248/kuporu_jetalo.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4418368/normal_60b449c70f167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446165/normal_602290de3b2d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444358/normal_5fe6cd1fcca0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423453/normal_60219dd654e4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476126/normal_60b7ea15af317.pdfIn PDF document text
    • https://dafavazama.weebly.com/uploads/1/3/4/8/134893815/3683557.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424935/normal_600a5c59a10c2.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/0dcebc15-84cd-4b3a-a33d-6cce7e53fb15/21460331469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85537f4a-a90e-4d11-951e-1d2731126ea8/atwood_hydro_flame_furnace_operation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f439edd8-807e-441b-9903-e29e7e26662d/86239672502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65192c6d-9992-47c0-af4d-6c870cf0e593/oster_blender_food_processor_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2bc019c-8b42-4cbf-83a8-e7f0f6f89993/sipelanibexovur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e468bdfc-60a9-4f10-a3da-7d3dbd1718f7/sijodobibiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f09e97e-da6a-4588-893b-10e420485fc6/90037108227.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_off0000e1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C1 5060 bytes
SHA-256: d2a664338e0f44e2cc1eb3daa3b62050e949628cbd002d6fc82c3474fe67d489
font_01_sfnt_off0000f303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF303 10676 bytes
SHA-256: 40db3c70c252db3e05aea54613db03858946c86d4a33b0fed6167e41fdb95afb
font_02_sfnt_off0001179a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1179A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2