Malicious PDF — malware analysis report

Static analysis result for SHA-256 74579d5afc3d243e…

MALICIOUS

PDF

43.9 KB Created: 2020-08-08 13:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c9624aba83d2a5ecb6cc38a0eae86c3 SHA-1: c02729162ff1aae677be2fa36a65dfd6ca7ac21c SHA-256: 74579d5afc3d243e311da74b6cf4078469ac11938618457432e57b22828e85c9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service designed to obscure the final malicious destination. The primary redirector URL is https://ttraff.ru/pify?keyword=adosphere+2+guide+pedagogique+pdf+vk, which is known to host malicious content. This indicates a phishing or scam attempt leveraging SEO tactics to lure victims into downloading potentially harmful files.

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=adosphere+2+guide+pedagogique+pdf+vk In PDF document text
    • http://golosowe.jamesaodell.com/uploads/1/3/2/6/132681670/240338f66a.pdfIn PDF document text
    • http://foxek.districtsolutions.net/uploads/1/3/0/7/130739835/finiw_notuxu_sutivo.pdfIn PDF document text
    • http://files.vanessasteck.com/uploads/1/3/0/8/130813546/rurisuginax-nafura-niguduxuzapiku-zemekivutuki.pdfIn PDF document text
    • http://files.wetspotfl.com/uploads/1/3/2/6/132682134/voxumatorogex-legaruzol-ziruj-fepujel.pdfIn PDF document text
    • http://files.surfacetoairsystem.com/uploads/1/3/1/4/131437676/defaxopukoju-mokukipokis.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/1/0429/3731/9590/files/xasasepobutaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5435/1015/files/introduction_to_ant_colony_optimization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6522/1028/files/mebebopeselugilogokilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/10524259824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/radogux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3706/3328/files/refowivamawimexomuvusir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/93265440272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3525/4171/files/75465968600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8713/2827/files/siva_manasil_shakthi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/zajowosivaxizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2067/1400/files/eliseu_martins_contabilidade_de_custos.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 4

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_off00006d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D25 5644 bytes
SHA-256: ac2c3583eb17df6c9b14f6ecdf1f5ecdf3a51dea4369a78e4e1151e5e51c1f35
font_01_sfnt_off00008055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8055 10088 bytes
SHA-256: c1f4d614d35d346bf4388f5459d10bf1b9150b672ae602192cdb120ee293f1a2

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