Malicious PDF — malware analysis report

Static analysis result for SHA-256 a68ff79b0e416d23…

MALICIOUS

PDF

36.1 KB Created: 2020-08-12 22:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ddc9634517b512c80279a9012205558 SHA-1: f668a7f818c296df91292145f510e9c8e749d255 SHA-256: a68ff79b0e416d23e5febe811123ba276b84a49e2c1c3c8861aa442b860591bf
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, 'ttraff.com', which is presented in the document body as a download for 'Sexuality and the psychology of love pdf download'. This suggests the document is a lure to drive traffic to malicious infrastructure.

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.com/pify?keyword=sexuality+and+the+psychology+of+love+pdf+download In PDF document text
    • http://files.starfishlbicharters.com/uploads/1/3/0/7/130775544/zojiza.pdfIn PDF document text
    • http://files.fancyrat.net/uploads/1/3/1/4/131437660/vasolizobogo-tajigixitif-sivelulenutoda.pdfIn PDF document text
    • http://wipefadat.aylmerunitedchurch.ca/uploads/1/3/1/4/131453133/8930450.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/1/0433/0071/6694/files/dopogazosunog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9273/8201/files/5729609817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/65897276579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/verb_adverb_adjective_noun_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/loxijefanegitefijije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/dallas_stars_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/jaluximotelarumipibeloto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8431/6823/files/social_psychology_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1771/4334/files/motor_auto_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7430/3640/files/rorukuge.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 2

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_off00004cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFA 5744 bytes
SHA-256: d340a32e4714b956fc3030b867d8b183cac0851143d9ea935b921e45252bb938
font_01_sfnt_off000060a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A9 10200 bytes
SHA-256: a23613be83661e7bf1f4d49b19af19d18480662b814667d9441ee9135215a6ca

Open this report in the interactive analyzer, or submit your own file for analysis.