Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d210c288a340ef…

MALICIOUS

PDF

51.5 KB Created: 2020-08-15 07:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 641180f89c9da9f20c42d571ba7a040d SHA-1: 14c51de406053a5bb9f6a1a7f693e46565e33438 SHA-256: 28d210c288a340ef1b5091b416f571777170c002c43498a3b4747099954c72cd
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to email form submission and includes the malicious URL. Additionally, a heuristic for a PDF link farm was triggered, indicating a large number of outbound links, with the primary one being a Shopify URL.

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.cc/wb?keyword=email%20pdf%20form%20submit%20button In PDF document text
    • http://files.tipsandtrick.7pilar.net/uploads/1/3/2/3/132302759/jakirugi.pdfIn PDF document text
    • http://files.ellashannon.com/uploads/1/3/1/4/131412558/runebatuletoli_sopanaf_duxaw_gakuxi.pdfIn PDF document text
    • http://files.muscatdogadoption.com/uploads/1/3/0/7/130775612/xukamiveleroj-gowuwaminadiz-noduxuf.pdfIn PDF document text
    • http://radazajaz.apparelcolorwork.com/uploads/1/3/0/9/130969368/nuduwimifelonil_ligirujigaro.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/1/0429/6769/5511/files/el_paraiso_perdido_milton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/zufanisanawojuwez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/nutakofepudedawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3772/7637/files/kapafowadagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5095/0041/files/78065638308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/game_catalogue_may_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5903401900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5616/0151/files/gakaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9710/4288/files/wujuwusilegakule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/cover_letter_pharmacist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3106/7813/files/wezif.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 5

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_off00007d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D98 5284 bytes
SHA-256: 2b4dbfa37ccc09a655766aef441d67bc016de08d614876b686ce60f7ba1b13b8
font_01_sfnt_off00008f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6F 15928 bytes
SHA-256: aa10ff4d47bbac56c0e5790542b31b8ce0aabeebf9e8ca2afaf7084b077f3024

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