Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ffc748185cb87e2…

MALICIOUS

PDF

49.8 KB Created: 2020-08-05 22:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba701b66b0b51b32b4896c5f81a6b336 SHA-1: 973ded048cc0c35ce03d124f4ff4b9845855913a SHA-256: 4ffc748185cb87e2548ce1bf2e22e5eaf7fdcc9281957865faab92a34c468f71
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.ru/pify?keyword=seductive+storytelling+pdf'. Another critical heuristic identified a PDF link farm, suggesting a broad distribution attempt. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains references to the redirector URL and appears to be a lure for content related to 'seductive storytelling'.

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=seductive+storytelling+pdf In PDF document text
    • http://files.riversofthekingdom.org/uploads/1/3/0/8/130874123/956c4.pdfIn PDF document text
    • http://files.melissashowers.com/uploads/1/3/2/7/132740399/1333731.pdfIn PDF document text
    • http://files.pacetrailseries.com/uploads/1/3/1/4/131407802/detuxipamipodefi.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/1/0433/5550/4795/files/sozujamedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/medwatch_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6344/files/29836981861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9382/files/ruruvomerexagare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/selarotigaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/28073709150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/gsm_based_vehicle_tracking_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7199/5033/files/business_plan_for_startup_company.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/79151691975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8518/files/44635457476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33435760041.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7D 5380 bytes
SHA-256: a0b0f69ca30db05adcfb275979a4141caf69969fc2ebeda2a3e9d5f50a394864
font_01_sfnt_off000080ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80ED 10384 bytes
SHA-256: cba45ec90c48afaba5fd9b66ae01b06cece5858b38762c2d9754fc4ebc359f03
font_02_sfnt_off0000a4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B9 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660

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