Malicious PDF — malware analysis report

Static analysis result for SHA-256 1375b1fe78c059ea…

MALICIOUS

PDF

37.5 KB Created: 2020-08-12 01:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29ca1c49327f3ca64931ab09e9a96357 SHA-1: 3214072c6e2aafe9cf92d6426410219b8254a910 SHA-256: 1375b1fe78c059ea7424f8af945472cf9ba215403ef99590c7157e5dffa9c153
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to direct users to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that aligns with the identified malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=adkar+sabah+pdf In PDF document text
    • http://xumawo.shootacademy.co.uk/uploads/1/3/1/4/131454012/zebilinuwujig_tobugifijojelor_nitezuloropi.pdfIn PDF document text
    • http://files.univerdant.com/uploads/1/3/1/8/131871569/85c677fa73.pdfIn PDF document text
    • http://wufotopev.empireicenyc.com/uploads/1/3/1/4/131483416/e2887d7a.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/1/0435/7806/5055/files/23065807868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0881/1427/files/logitech_hd_webcam_c310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/47243252311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/91954591428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gabagijujusudizal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/423234735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/zesovebutazunukivata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1258/5634/files/godadujigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84312174386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/5363439845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/samekadewinijakira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/2358823342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/asset_management_download.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_off000058ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58BA 5288 bytes
SHA-256: 144c50843f9255e9e11402285186714fb6d2b94ccea975e781089a62829e29fe
font_01_sfnt_off00006aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAD 9044 bytes
SHA-256: 935d73490fd31b222b3b59071c362a7c5a2e44583cf95165992e935a59455a01

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