Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9312a24414f946a…

MALICIOUS

PDF

41.7 KB Created: 2020-08-22 07:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00083b075910310b629c4e001f207048 SHA-1: 3600d36860c96ef468943b4c57497aeace9a6be1 SHA-256: d9312a24414f946af602d9347d0cc1192e94e453635037fee0ae9efbaf8588fd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm with 28 external PDF links, many hosted on Shopify, suggesting an attempt at SEO poisoning or a large-scale phishing campaign. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of numerous links and the redirector strongly indicate a malicious intent to direct users to harmful content.

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=comets+vs+asteroids+worksheet In PDF document text
    • http://files.mrsthompsonteaches.com/uploads/1/3/0/7/130739173/vukemoba.pdfIn PDF document text
    • http://files.energiepositief.info/uploads/1/3/2/7/132712508/gofebopepapepu_fakedefu_pelemebasorug.pdfIn PDF document text
    • http://files.fdryabc.com/uploads/1/3/2/6/132682833/wafisaweje.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/1/0434/1979/5623/files/nordic_track_2550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1306/8184/files/56602139334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4549/4684/files/femimasojidoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/business_plan_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/bojomolaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/ir_2135ti_max.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/minebigulapimulotiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/waxigulazatep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/86967395743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3468/1250/files/88688995656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/obstacle_avoiding_robot_using_ultrasonic_sensor_arduino.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_off000065ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65CE 5156 bytes
SHA-256: 289bc7dad3c58755971be7114027960aa3583bb9641908bd563e26d0c5c7b052
font_01_sfnt_off0000773d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773D 10060 bytes
SHA-256: 5760eb9bc11bf29d5af6376add69aa6027b778adb0fb37356c7015d9b7dc5370

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