Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f2ca8b5dff9603…

MALICIOUS

PDF

36.5 KB Created: 2020-08-24 17:26:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a3ab664530f01c479b822b72c983b09 SHA-1: 7e99a089277b9a6664ed7f5a07d9189b627f1adb SHA-256: b9f2ca8b5dff96037a702d46dbb83bd7a06b39b279611f671b0747f209728fc0
194 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at ttraff.com, which is likely intended to lead the user to a malicious site. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the target URL, suggesting a lure for potentially unwanted software or phishing.

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=autodesk+sketchbook+animation+android In PDF document text
    • http://vemaxabim.parohia-kassel.de/uploads/1/3/1/4/131438397/kuwimawolusutuv_zenagevok_zubolofujofu.pdfIn PDF document text
    • http://files.mrsbsmusicclass.com/uploads/1/3/0/9/130969965/sagamaxusinidureri.pdfIn PDF document text
    • http://gogotabi.cpfcanada.com/uploads/1/3/0/8/130874276/renemuzesetotujive.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/1/0427/8226/1415/files/virebepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fapodepemiretewuroraga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9910/6983/files/piwaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/86514941815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5700/4192/files/alsager_school_uniform_suppliers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6599/4392/files/sobiwofesuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/muriminikusofepedukinex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8086/8255/files/mulching_sheet_uses_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/cutting_edge_third_edition_upper_intermediate_progress_test.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 7

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_off00005188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5188 5340 bytes
SHA-256: f2dde902ac1c29376748e808efcdcfa13400e368cf1e1d7871b2167b9df91e03
font_01_sfnt_off00006373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 9956 bytes
SHA-256: 92806e0006c6687d9e08a12282f51dcad6d4bcf4afd405a43115dacebb856b57

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