Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab71014821b02bd…

MALICIOUS

PDF

50.4 KB Created: 2020-08-05 03:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74b351303633febf86a8905bc2b14add SHA-1: d25cf3146ff177f8b0d8e6cd91f6c7362e4237ba SHA-256: 3ab71014821b02bd0aa3cc6e5f448748e67ac5fddc4d5936b0f71d45d69e0138
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF document contains a mass of external links, masquerading as book reviews, designed to lead users to a redirector. The primary malicious link, https://ttraff.ru/pify?keyword=old+man+and+the+sea+book+review+pdf, is identified as a known malicious redirector. The document's structure and link farm indicate a social engineering tactic to drive 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.
  • 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=old+man+and+the+sea+book+review+pdf In PDF document text
    • http://files.midcopw.net/uploads/1/3/1/3/131384777/7380322.pdfIn PDF document text
    • http://files.allsaintsws.net/uploads/1/3/1/1/131164152/2054585.pdfIn PDF document text
    • http://pigovawi.iwa-tellmyanmar.com/uploads/1/3/1/4/131406202/xatulegidofikamedu.pdfIn PDF document text
    • http://files.mstreetfreerunning.com/uploads/1/3/2/6/132682681/zuporidimudi-bedajizujamin-fusunivikexi.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/1/0429/2640/7843/files/mikademe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/french_language_learning_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/assam_tribune_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99781003244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/6938695771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5201/4495/files/68950951250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/wejeloredebinetozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2241/7047/files/biogas_power_generation_plant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0949/8536/files/92032254874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1520/8098/files/xokiwimatirijewukiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4237/1741/files/joxixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/32628692092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/41272661248.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8515 5664 bytes
SHA-256: 6f4a81d7200beeb02e744c1e958ff77c62110e85b0bf22b9289a014eaf0198a9
font_01_sfnt_off00009832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9832 10496 bytes
SHA-256: 55b476cac78788c525ae8bad4061dc83a6f8839867a510e36b6fc1367b6f7f87

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