Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9ba20d9210621a…

MALICIOUS

PDF

49.7 KB Created: 2020-08-12 06:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b845b2722289b2cafba9847870358846 SHA-1: 0975a2c7cec89612b85d44ae7f2f967745db529a SHA-256: 9f9ba20d9210621a6a16fc533bcee4a466c1c5d4d94780f6870676c822a3c07e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body is heavily obfuscated but contains text suggesting a lure for a free download of technical drawings. This indicates a phishing attempt to redirect users to malicious 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=mechanical+engineering+drawing+symbols+pdf+free+download In PDF document text
    • http://files.mandrcatering.com/uploads/1/3/1/4/131438541/gitiluwe.pdfIn PDF document text
    • http://files.trendupwholesale.com/uploads/1/3/0/8/130873794/9f7b62a0518.pdfIn PDF document text
    • http://files.two-wheels.org/uploads/1/3/0/7/130740069/5e127.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/1/0438/3748/9309/files/difumozoxalijigiwuzoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54686169254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/tilalojavomixifagosudili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/37795356139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9696/9109/files/hammerdin_build_diablo_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0462/3010/files/goboloperizenureji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0114/3715/files/dafexomoterapevajibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/16625416386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1495/4918/files/84607650977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9751/files/bible_books_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/rejukalifujosukorivele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4160/2208/files/86632103871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/4834537920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/44186536863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/49570246950.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 3

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_off0000784a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784A 5908 bytes
SHA-256: 8dd4391f9bc79c5bca678f9d3b341077f662594047a31c98b6d132a3fd6f29f2
font_01_sfnt_off00008c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C43 14808 bytes
SHA-256: dd3b22dd8a8759cacaf0f4320e35bf958fc97f719c1da060bb53a7b7ec6415e7

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