Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd8005414fea8ddc…

MALICIOUS

PDF

43.2 KB Created: 2020-08-06 05:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76d479f2289532aba69a0cfafee9a4af SHA-1: 8d09fe508369a4515b47425069a2ffa89f354f49 SHA-256: dd8005414fea8ddcefca4088680f09ce3c0aa511644823b5c4994e7b673320b4
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 external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=anatomy+and+physiology+of+speech+language+and+hearing+pdf'. This suggests a social engineering attempt to lure users to a malicious site under the guise of providing an academic document. 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/pify?keyword=anatomy+and+physiology+of+speech+language+and+hearing+pdf In PDF document text
    • http://files.hedgieloving.com/uploads/1/3/0/7/130740112/2678729.pdfIn PDF document text
    • http://wizum.leadingtowellness.com/uploads/1/3/0/8/130874493/lavumuke.pdfIn PDF document text
    • http://files.gigikentwellness.org/uploads/1/3/1/3/131398117/8797277.pdfIn PDF document text
    • http://files.cbtutoring.com/uploads/1/3/0/7/130775282/wewomenovafotubo.pdfIn PDF document text
    • http://files.epgxc.com/uploads/1/3/1/4/131438567/9927068.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/1/0433/9243/4326/files/timidikosotuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6517/2387/files/5_kingdom_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/83610378045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5288/files/5853006977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/docs_powerpoint_viewer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/38075993811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5097/4888/files/anchor_hillsong_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0172/4580/files/vogubovikalugunobogolapak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/anthropology_ugc_net_study_material.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/wekiwegoseroxijovana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4677/1607/files/kowux.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_off0000689c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689C 5660 bytes
SHA-256: 3576065cddca28a01b1d84d5ca37a7c07f95ed959dd1256859964dfe99e3ef3f
font_01_sfnt_off00007bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC5 10464 bytes
SHA-256: 6751a8dc48fe039eb796e985d34760e660e5628b163366f52061f60dce5bf4c2

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