Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f2b5b035aed22de…

MALICIOUS

PDF

36.0 KB Created: 2020-08-14 02:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6701321a593e075a6ef382ed91fa7ca SHA-1: b9847c1ce73ee8555cb94220f3f2f55f47cf693a SHA-256: 6f2b5b035aed22deba8e50fef90bf6e1f601fcb2887e8ece6200ba3077321bc3
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to a redirector service, indicating a likely attempt to drive traffic to malicious sites or conduct phishing. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the structure and embedded links suggest a malicious intent to redirect users, potentially for malware distribution or credential harvesting.

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.ru/pify?keyword=cuddledown+sloth+sheets In PDF document text
    • http://files.152811427883146431.com/uploads/1/3/0/8/130814926/ecf835.pdfIn PDF document text
    • http://dawuno.richardmerrill.net/uploads/1/3/1/4/131453540/nuseguru-jixufuwaler-nurebis.pdfIn PDF document text
    • http://files.liveinlovecs.com/uploads/1/3/0/7/130775462/zomeberax_lomidi_falunukoposinoz.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/1/0430/8631/5682/files/ripifapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9354/1532/files/lalinusofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9098/3574/files/ethiopian_orthodox_bible_names_in_amharic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9657/8975/files/simple_past_exercises_esl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/different_types_of_bolts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/wesufuwuxaluxawem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/btec_business_level_3_book_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0729/3086/files/zekivudowifako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8951/files/texas_commercial_driver_license_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/1057/5771/files/anemia_peru_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7610/5893/files/fajomanijomatobupegimak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/new_technology_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/roxazavanizokepaze.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 4

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_off000050cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50CD 4604 bytes
SHA-256: 60a6c319bee2a392c87a3e38c6899217c3d86c89b54570308e5296a4ea5ae965
font_01_sfnt_off0000607f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607F 10148 bytes
SHA-256: e91a3c8f5019a17989db931074900aa80c31541c199bc5dd3ef0831674f7b1e7

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