Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4bb4f82cdf282c…

MALICIOUS

PDF

42.2 KB Created: 2020-08-24 13:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6b3421a66fd1fe43a6a9f72617b31f2 SHA-1: 8a8fc167281be70bd124fda042cdee7d144962d9 SHA-256: 7d4bb4f82cdf282c2d56bac1cde19be857ef75886f49885f91d2c8bb71555297
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though partially corrupted, includes the same redirector URL and references to other benign-looking PDFs hosted on Shopify. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure, likely for phishing or malware delivery.

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=cuadro+medico+asisa+cordoba+2018+pdf In PDF document text
    • http://gadofov.snowypeaksoap.com/uploads/1/3/0/7/130775626/6776511.pdfIn PDF document text
    • http://files.griffithspropertymanagement.com/uploads/1/3/1/4/131453060/7931377.pdfIn PDF document text
    • http://files.regencyparkcary.com/uploads/1/3/0/8/130874587/1544936.pdfIn PDF document text
    • http://files.prairiefirebordercollies.com/uploads/1/3/1/1/131164202/841647.pdfIn PDF document text
    • http://gupodaxi.blackpeakstudio.com/uploads/1/3/1/4/131406082/01865a565cc27.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8958/3514/files/jenadugegazuxurilevudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6382/6849/files/86992168410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/youtube_link_full_screen_autoplay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0435/3956/files/62582035630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9754/6149/files/27667594508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/buloxolojixepowos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/zebetiwati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/73747989923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/71975416390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/20217501568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/vidozozafaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/gixakazoredufa.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
🗂 Part of campaign: prairiefirebordercollies.com 4 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54A6 5648 bytes
SHA-256: 326b0d96df17f210fddf3372fa55834614c9f88d1b6a6395b972d29211cd77fc
font_01_sfnt_off000067da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DA 11164 bytes
SHA-256: d83b2edffd91c404d4bd8afef71f8733a866965fdebf62b62b975e4a272e4b6a
font_02_sfnt_off00008bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDE 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c