Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da00e0cc1161fac…

MALICIOUS

PDF

45.0 KB Created: 2020-10-26 17:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d440f79127f2f58dd2b34fc32a0812de SHA-1: 397a4dcbe9fe1c704a748521daae4fa3bdeb7bbf SHA-256: 0da00e0cc1161faccd9ff6d5e58efef5381965abcbc827d67c7605f5848ff5ec
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to disposable hosting services and redirectors. The primary link, 'https://ttraff.me/123?keyword=truck+driver+cargo+mod+apk+download', is identified as a malicious redirector, suggesting the document is part of a link farm designed to lure users to malicious sites. 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.me/123?keyword=truck+driver+cargo+mod+apk+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_5f8fdaaaa53cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5f92859c2de34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f92abca1733c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_5f8ba20444d2b.pdfIn PDF document text
    • https://kulinamolusamu.weebly.com/uploads/1/3/4/2/134234583/ridefabakoreno.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/9325080.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/fapevawoluwojos_ribuz_kixoji.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/mukitijaxuxisevoj.pdfIn PDF document text
    • https://fewaxozane.weebly.com/uploads/1/3/4/3/134341296/96c386132d6dd.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/nirexa_gozomudigad_nufiforoz.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/5106717.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/335b708b-860e-485a-8c76-cfcea232d4c2/puntos_de_partida_10th_edition_dorwick.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc9b4a55-8567-4e2c-8bf4-8b3878ab7f08/kubunogiridadumubiwojon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b89707c-67ff-4ade-b641-f63a47c14e83/seth_speaks_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c343e85b-b4d5-46ca-8963-974d9083d612/91497867574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/8669/4550/files/comparative_analysis_thesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2157/6610/files/does_retinol_work_with_vitamin_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9209/2091/files/8051_microcontroller_based_mini_projects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7598/6116/files/modern_arabic_short_stories_bilingual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b167ecd6-a98f-44f3-9c4c-f573b57eefd0/6817991928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ece04f5-1561-47bd-90f3-548e8f8ac56b/90355370863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecc05ae9-721c-474f-90c7-471165e9ff7c/65126245105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d34695dc-6e36-4e61-bab8-388ce154008f/43886188948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cb8c78f-a838-4555-a652-2e263facf5b4/67527668192.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_off00006f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6F 5380 bytes
SHA-256: b8f84a3f85aa79035abfa431c4e0d6f1a8c47afa4487764c12353f10231e5467
font_01_sfnt_off000081bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BD 10860 bytes
SHA-256: 6e8c62881ae5810154d00bcce667bcf6239bd8b62e6d01dd3d2b9c50c71b0367

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