Malicious PDF — malware analysis report

Static analysis result for SHA-256 270bcaf4353d7c64…

MALICIOUS

PDF

36.5 KB Created: 2020-08-12 16:57:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 000d4504e81304bf6b4478da8aac4d40 SHA-1: 37bda53de099035d4ca22a2d20f9376cd56d42f8 SHA-256: 270bcaf4353d7c64dadb693134d4c2fabe2cd64f2edca457537201cc36c5a805
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though partially corrupted, contains text suggesting it is a manual for a 'HP zbook studio g5', a common lure for phishing or malware distribution. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted from this sample.

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/wb?keyword=hp%20zbook%20studio%20g5%20manual In PDF document text
    • http://files.puremotionwithmandy.com/uploads/1/3/1/8/131856112/4789508.pdfIn PDF document text
    • http://files.mckaychurchsupply.com/uploads/1/3/1/4/131438477/zovevup-jozajidakokulub.pdfIn PDF document text
    • http://files.arteachingcollective.com/uploads/1/3/0/7/130740049/7431e260.pdfIn PDF document text
    • http://files.deanhunt.net/uploads/1/3/0/7/130739069/e3f2b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/active_learning_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/88192065376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0008/6175/files/dovobenitamosezopupexap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9602/1919/files/achievement_motivation_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5620/9819/files/41419572064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/muwetevelivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/jejij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7301/1863/files/tazomabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fezusagofetivori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2156/5078/files/gubirufi.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000459f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x459F 5284 bytes
SHA-256: 141f5d2f1c6977fd7e9279f6bc994a773b3b73e69fa46f70a60ff5240ee8e1dd
font_01_sfnt_off00005778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5778 9288 bytes
SHA-256: deccfebd1d627baa8017813fa0c3eb8217d717de129281f27539e3f79648da1d
font_02_sfnt_off0000773d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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