Malicious PDF — malware analysis report

Static analysis result for SHA-256 081fb32f54c4a8f3…

MALICIOUS

PDF

42.1 KB Created: 2020-09-18 19:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbc24be9fa0c2df4e51c013ea563daa6 SHA-1: fc67d9c785b7b47f1780bf003e6d2fdf05b4996d SHA-256: 081fb32f54c4a8f3665eb88633d6db87e47a5c1d2f3b336e3b6664d74b8a3b36
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to disposable domains, which is characteristic of a link farm designed to redirect users to malicious sites. One of the primary URLs, 'https://ttraff.club/wix?keyword=bangladesh+student+association+in+india', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.club/wix?keyword=bangladesh+student+association+in+india In PDF document text
    • http://lodofulo.family-martialarts.net/uploads/1/3/1/8/131856979/bepadizerepelufev.pdfIn PDF document text
    • http://zaral.ims-spi.com/uploads/1/3/2/6/132696056/2005150.pdfIn PDF document text
    • http://vopefew.sassychicmidland.com/uploads/1/3/1/4/131454172/b75807.pdfIn PDF document text
    • http://files.dobiedomain.com/uploads/1/3/2/3/132302987/wizigutaxosi.pdfIn PDF document text
    • http://vitotipow.rattlerbands.org/uploads/1/3/2/6/132681218/6155ee6ba144a91.pdfIn PDF document text
    • http://nolajap.californiasun.co/uploads/1/3/1/6/131607600/e59b4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5ecc4b70-3673-499c-a043-cee80ca6eb40.filesusr.com/ugd/89602e_bdea91f1453f45c2881dba04c33ee54c.pdf?index=trueIn PDF document text
    • https://c753ce6f-36b6-4926-8e89-5ff17e613aa9.filesusr.com/ugd/162fe6_a3358da1b9444265a568b4d2d3f2c043.pdf?index=trueIn PDF document text
    • https://1ad18415-d1ad-47fc-aec0-fcdfc6579d4f.filesusr.com/ugd/784815_7ebac8aa240c4353b6c41b5cfad445f9.pdf?index=trueIn PDF document text
    • https://28b459f1-650d-441e-9dd0-baf70f2b8629.filesusr.com/ugd/c8f33b_22b8d0022d1d416b8ada6a29e5ccf07b.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7430/6727/files/abs_workout_plan_for_beginner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/liwukepurenugiweda.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CC 5152 bytes
SHA-256: 67126f426bb800c29d8854012467e40996f15c8f95a7a9dc3997664e50ef2c5f
font_01_sfnt_off00007851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7851 10396 bytes
SHA-256: 76e6c2997c00d8e5990699a36e252e545df83450ff1a25792837a1dfb4c2b514

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