Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f0161a5fb97179…

MALICIOUS

PDF

40.3 KB Created: 2020-09-13 09:08:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8083e737cef3f8591df908ced7ec16a8 SHA-1: f62ca5294f805f38a106f6f257fe2e902347b4f0 SHA-256: 19f0161a5fb971798f4ef146de21c3718464228084b6f9b2ae1198c6a71c187b
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on various domains. One prominent link, 'https://ttraff.link/wix?keyword=m4+field+manual', appears to be a redirector. The document body also contains this lure text, suggesting an attempt to trick users into clicking through to malicious content. The presence of a link farm and a redirector indicates a campaign focused on driving traffic to potentially harmful sites.

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.link/wix?keyword=m4+field+manual In PDF document text
    • http://diletosor.milagracecreations.com/uploads/1/3/2/8/132814930/07212b61b03f.pdfIn PDF document text
    • http://mekilide.solegalore.com/uploads/1/3/2/6/132696147/xemul-dodej-bemafaromasara-jekugiloxav.pdfIn PDF document text
    • http://files.sanjapavloskaphotography.com/uploads/1/3/1/3/131379696/guwive.pdfIn PDF document text
    • http://javofaw.g12generation.com/uploads/1/3/1/4/131407406/redoxotegapoku-kalojunino-valumesiruguviv.pdfIn PDF document text
    • http://forawim.jessicalaurelreese.com/uploads/1/3/0/9/130969483/volixoxubugoxigepi.pdfIn PDF document text
    • http://posux.ironstormcorp.com/uploads/1/3/1/6/131606156/nagurimolazipu-fadox-guzobiga.pdfIn PDF document text
    • http://files.flyingsamaritanselhongo.org/uploads/1/3/1/4/131437295/gejorerev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/31905696273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1949/9682/files/civilization_3_strategy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/dawegivowolufona.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 5

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_off000061ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AD 4872 bytes
SHA-256: 0e83b67a54684480cf338abc785492c3eb0e5bacc618a663cf136f3325ace939
font_01_sfnt_off00007240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7240 10240 bytes
SHA-256: a46cd7f2d757b8b88a61af9746ef1774429842138ff74b2cfcd0604e0c60769d

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