Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b16430b10eb1078…

MALICIOUS

PDF

45.4 KB Created: 2020-08-08 19:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 545472587cc29944adc5afceb6f0155d SHA-1: 37b38bfc1702616c60a4cc1ec4ff491043346664 SHA-256: 4b16430b10eb10788e2f87f2c5b4e8089c187aaf54223c2b456f540a4a12d2d2
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm designed to improve search engine rankings. One of these links, 'https://ttraff.cc/pify?keyword=marathi+story+books+pdf+free+download', is identified as a malicious redirector. This suggests the document is part of a phishing or scam campaign, using the lure of free PDF downloads to direct users to malicious 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.cc/pify?keyword=marathi+story+books+pdf+free+download In PDF document text
    • http://files.southjettypress.com/uploads/1/3/1/3/131383480/94030c1.pdfIn PDF document text
    • http://files.turnssoft.com/uploads/1/3/1/4/131453127/vuzugubi_ximomubid_wuromokudipas_salozutowevoti.pdfIn PDF document text
    • http://files.ronaldchaseauthor.com/uploads/1/3/0/7/130740367/luxewesazivuzud.pdfIn PDF document text
    • http://files.seattlefirstbaptist.org/uploads/1/3/2/3/132303080/81e42db7c9176.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/1/0430/2084/5210/files/gotumagabanabirafeneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1855/9389/files/zaromobivedotebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2503/8497/files/70204574503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7442/8827/files/34086214368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6916/8021/files/79228835214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2456/4902/files/emotional_intelligence_2._0_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1827/3446/files/3097257460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5523/files/78534011708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/bisuxokuropuvuwisirexizap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/29920269658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/madden_09_sountrack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/53839210086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/10354743884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8734/7364/files/27523458502.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 8

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_off0000703e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 5532 bytes
SHA-256: 88162418d2fb5bf91a5e35dcf87ce0e07737bad30c41c4b52e54bba0d3766452
font_01_sfnt_off00008327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8327 10384 bytes
SHA-256: 103116c98011962483586d68ecf80c63999e663dc366db46d484c61b9cb68f30

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