Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d43364d4bcc77ed…

MALICIOUS

PDF

41.7 KB Created: 2020-08-24 07:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4552b5b86252b39e17d4e06f044368bd SHA-1: 39e30bfed2ad9d1e7a56863d36bbdadce4a9112e SHA-256: 7d43364d4bcc77ed022ac95a4c86d1496cbf17136dea1ed79a8110c14dd5c0b5
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) disguised with keywords like 'healthy soul food recipes pdf'. This indicates a phishing or SEO poisoning tactic to drive traffic to malicious infrastructure. The ML classifier strongly flagged this PDF as malicious, and heuristics confirm it's a redirector link farm.

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=healthy+soul+food+recipes+pdf In PDF document text
    • http://files.doulakaribirthservices.com/uploads/1/3/1/3/131380295/4170461.pdfIn PDF document text
    • http://files.sterconwalds.org.uk/uploads/1/3/1/4/131453291/1332249.pdfIn PDF document text
    • http://bowixase.dancefoodforthesoul.com/uploads/1/3/2/3/132302872/wamogapikogogi.pdfIn PDF document text
    • http://files.icehorizons.com/uploads/1/3/1/1/131164250/parupamat_semisaxoto.pdfIn PDF document text
    • http://jatizu.josefjakobs.com/uploads/1/3/2/7/132740978/xukuvobirizoj_supitojepubu_nuliwozin_bisegodezevosiw.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/1/0437/5232/5272/files/pikosujali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/64580818191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8271/9127/files/bonibepezupabobuzemabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/35324005806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/39551068854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1026/7035/files/alt_balaji_new_series_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3785/7691/files/kaart_achterhoek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8167/files/42037233866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3353/2315/files/ccsp_cbk_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/8785773768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/75543417719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/51839878517.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_off000064ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FF 5308 bytes
SHA-256: 347ac82ebd9b16123e1e070fc2720fa757236e18e2c2a72cec8bb9af556c3651
font_01_sfnt_off0000770a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770A 10180 bytes
SHA-256: 763b7c8fa9c90b2d212037e58c161f38a485215504e8a83ed20c6dc103fcdbfa

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