Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c37782d42f8fe8d…

MALICIOUS

PDF

40.0 KB Created: 2020-08-13 03:34:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69cbe6f830a477f3af5ff071a4dbb738 SHA-1: e460cf918fa112bddcd8cb45176b0972466e2712 SHA-256: 7c37782d42f8fe8d920d74321827f3d7496996c5979141c786ccc6df7e92088f
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, masquerading as a "molecular genetics full book pdf" download. The primary redirector URL, https://ttraff.cc/pify?keyword=molecular+genetics+full+book+pdf, is flagged as malicious and part of a link farm, indicating a phishing or malware distribution scheme. The ML classifier strongly supports the malicious nature of this PDF.

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=molecular+genetics+full+book+pdf In PDF document text
    • http://rasaluse.aztecroguefoodsllc.com/uploads/1/3/1/4/131407406/c21b45e48e3a76.pdfIn PDF document text
    • http://files.techlab17.com/uploads/1/3/1/3/131380005/2598534.pdfIn PDF document text
    • http://nejaza.decoloresfarm.org/uploads/1/3/2/6/132695569/397a52.pdfIn PDF document text
    • http://files.petersknifeshop.ch/uploads/1/3/1/8/131872017/kagitogif.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/1/0428/2561/3468/files/58366918725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6649/8965/files/74055515865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1026/9085/files/kezalubapilazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5658/5114/files/12098795853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/xavaxezuralu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1756/6368/files/10667684851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/30_qualities_of_an_entrepreneur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/fadopekijidedode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/vuxirijaxonudezokudukel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/gagorajiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1353/7951/files/numpy_divide_matrix_by_vector.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/xavanixugujur.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_off00005c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5D 5532 bytes
SHA-256: e9a7b0a92b0bb95b09c9728e3e99a896c4c7259c5d963f6046f54f78827e90a0
font_01_sfnt_off00006f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F41 10516 bytes
SHA-256: ec89a2c52b67e7368a10b317451760fc140d370bafc47c154069974ec15bba98

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