Malicious PDF — malware analysis report

Static analysis result for SHA-256 41919221b587efe6…

MALICIOUS

PDF

37.9 KB Created: 2020-08-19 01:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c5843f6542baef42e5c87b823c4a323 SHA-1: e09d9a5c16aea3a98a999b7914b8d7da577c9a7c SHA-256: 41919221b587efe6d9d63ca461587cb164fe3a62ddbe2854001896ba5d3bf2c7
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector infrastructure (ttraff.com), suggesting a potential phishing or malware distribution attempt. The document body contains garbled text along with the primary malicious URL, further indicating a malicious intent to lure users to external content. No scripts were extracted, and the primary threat appears to be the malicious redirection.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.com/pify?keyword=little+more+video++chris In PDF document text
    • http://files.martinlutz-music.dk/uploads/1/3/1/4/131406379/likegijokiv.pdfIn PDF document text
    • http://files.umstrokelab.com/uploads/1/3/0/9/130969220/majajinudoj.pdfIn PDF document text
    • http://fijini.littlehartspreschool.com/uploads/1/3/1/3/131398539/9064b9bb.pdfIn PDF document text
    • http://files.stingrayepoxyworks.com/uploads/1/3/0/9/130969300/8136594.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/1/0435/5801/1035/files/social_franchising.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/erika_moka_uncensored.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/tic_tac_toe_java_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5509/4677/files/96784983164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9096/0799/files/46484298263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2224/4250/files/future_ds2_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19463184481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1286/3638/files/checklist_for_android_app_submission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72274594547.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 2

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_off000057b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B5 4972 bytes
SHA-256: 9d1f357203f66fdd3a36b126bda65e7c677beff4fa8e7cd3188dd97ab27d2b7d
font_01_sfnt_off00006881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6881 9996 bytes
SHA-256: 1cbf3f01865268e6573b2f8e002b4820fd3b7154ec3c194b7322bb06246b8dd0

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