Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb62c16f902e3fb3…

MALICIOUS

PDF

37.2 KB Created: 2020-08-09 06:15:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 740d823035de89a8711029b4bcc8292f SHA-1: 4859c9098261d69f8dc44a208de36e8f8830d842 SHA-256: fb62c16f902e3fb34f44348111c5aef5aae4d910aed46c7d88562c36c4a8afb7
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, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=all+about+me+in+spanish+pdf, which is likely used to redirect users to a malicious site.

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=all+about+me+in+spanish+pdf In PDF document text
    • http://files.threegracescoffee.com/uploads/1/3/1/8/131871980/7618838.pdfIn PDF document text
    • http://dubijozus.willology.net/uploads/1/3/1/4/131453133/cf17ba.pdfIn PDF document text
    • http://files.fridayflyfishing.com/uploads/1/3/1/4/131437402/guvis.pdfIn PDF document text
    • http://files.motnik.net/uploads/1/3/0/8/130874046/sodetapugukivugoj.pdfIn PDF document text
    • http://files.allvictoriavacuums.com/uploads/1/3/1/4/131437889/vozusezejelevu_lawidi.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/1/0435/6413/8651/files/32352477773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/paweforakazefarefudeposo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/biloxuselokazego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/selena_gomez_zodiac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99781003244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/nrsv_apocrypha.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0583/files/nusonavabopewinipijivoken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/nexudipewoloteluj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/lolizefoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4704/9621/files/git_log_graph.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/54361377126.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAB 5312 bytes
SHA-256: c333091010a0407bc1f15f30aa3d7c9bd53306fee580811b5454c3b68c588a5b
font_01_sfnt_off00005c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8B 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00006518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6518 9604 bytes
SHA-256: 2016b7e1d5f64bc1d1f7c81234b5adecb8f89686988a5a37e4f0949e39d09070