Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ba4012242dd1d2…

MALICIOUS

PDF

43.7 KB Created: 2020-08-04 19:35:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8929e7a07129fd6f65d698c30b74ebd3 SHA-1: 3c857051dd7c3f46d7c0552322e6b68ba761d9d5 SHA-256: 67ba4012242dd1d2ff6a08dc0e84a81872ccaa4015b4e440f320656f323bde99
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL, https://ttraff.cc/pify?keyword=architecture+residential+drafting+and+design+answers+pdf, is flagged as malicious and likely leads to a phishing or malware download site. The presence of numerous links suggests a link farm or SEO poisoning tactic to attract victims.

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=architecture+residential+drafting+and+design+answers+pdf In PDF document text
    • http://files.aretemediaacademy.com/uploads/1/3/1/0/131070581/2141031.pdfIn PDF document text
    • http://files.jbdivprod.com/uploads/1/3/2/6/132680949/495968c47a2fd62.pdfIn PDF document text
    • http://files.docuprodrawings.com/uploads/1/3/0/7/130775045/nobabuzavetedoluxa.pdfIn PDF document text
    • http://files.cardinalfastener.com/uploads/1/3/1/6/131606155/1833126.pdfIn PDF document text
    • http://files.thegolfparadigm.com/uploads/1/3/0/7/130739488/216e825b24d2.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/1/0431/1829/7245/files/vixuzadinepamosiroj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9409/8598/files/wigapom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3943/6449/files/how_to_enter_steam_keys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7707/5108/files/40691832401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6807/0815/files/birla_mutual_fund_bank_change_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4499/3181/files/98571993682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5229/3541/files/kagerou_theme_overlay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9535/9641/files/31315842203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wowivitotorinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0012/6880/files/vafotizojixedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/bewunidese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/wukef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/47347327430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/kidepadetir.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_off00006ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE7 5496 bytes
SHA-256: bb2733d0e00bf1227014ba4e879e7076939475dd7f003187f6741eda8c2f642c
font_01_sfnt_off00007fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA9 9808 bytes
SHA-256: 06ca3723e8b31e96dd4d9891a2b59393e300625ba69f6d9a7cba7deccc4432f6

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