Malicious PDF — malware analysis report

Static analysis result for SHA-256 8824c1f5f116b813…

MALICIOUS

PDF

42.0 KB Created: 2020-08-08 18:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3cbbb689cd30789430de12af0b0d04e5 SHA-1: fe91227be9efbfae612110eef75c44e96c1b7ebc SHA-256: 8824c1f5f116b81328697197b56a0475ea40f0404ddda9e36e7bc1b35cc37e43
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body and heuristics suggest a lure for free PDF downloads, likely a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector is a high-confidence indicator of harmful intent.

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=anita+herbert+free+pdf In PDF document text
    • http://files.littlebobtailresort.com/uploads/1/3/0/7/130776407/3179864.pdfIn PDF document text
    • http://files.leslienagel.com/uploads/1/3/1/4/131437012/dukavagexovuj-fofofux-moneziw-vikefad.pdfIn PDF document text
    • http://files.ballisticstrength.ca/uploads/1/3/1/4/131407178/a6a08283b7756d.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/1/0428/5323/6902/files/wevusenilumogegero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/lodixobesakoluketokoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/36231235533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6068/1109/files/audi_mmi_update.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fedixudarat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/steps_of_curriculum_development_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/17584944792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/xidifuwurepusujizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/jtable_netbeans_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/navizuriromikofade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/estratgias_de_marketing_digital_e_e_commerce_sandra_turchi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/nijabitaponagi.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 6

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_off0000659d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659D 5048 bytes
SHA-256: 40f556b3078e24b3118f9013ed6981740c951995affe7a867d5a4d1467da38b5
font_01_sfnt_off000076bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BF 10672 bytes
SHA-256: b0322dc134f54bac5ce7ce27add3c58a32297ab19aec8f79bea2a98bb4ecce47

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