Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f091646c7f0695…

MALICIOUS

PDF

46.7 KB Created: 2020-07-31 13:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43a40a3834caf8560068eb9229c3891b SHA-1: b64708e3fd7a9264b6234b44bed6fb222f4e1c37 SHA-256: a4f091646c7f069543902dfe4066e26c65f94d2675a5ee2f4f0a0e3c446044c6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains keywords related to 'digital signature' and 'foxit', suggesting a lure to trick users into clicking malicious links. The presence of a malicious redirector link indicates an attempt to lead the user to a site that likely hosts further malicious content or phishing pages.

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=assinatura+digital+pdf+foxit In PDF document text
    • http://files.personalhibachichef.com/uploads/1/3/1/8/131872298/aab0c5cebb17b.pdfIn PDF document text
    • http://files.dcdsign.com/uploads/1/3/1/3/131379820/mufaruvosamixetob.pdfIn PDF document text
    • http://files.lcdigitalconnect.com/uploads/1/3/1/0/131071252/dapawozijigawe.pdfIn PDF document text
    • http://files.lutzka.com/uploads/1/3/1/0/131069781/bidit-xemojegatopufir-defifexe.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/1/0427/6443/5612/files/fewenukirixus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7685/9557/files/zavofiwimuduxawikeluzajov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/ziporivujurozigabovizabul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/95737428936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92904811518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tovunegorudakumuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/70578303513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3462/1590/files/supezuwokinob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/jovejololarireb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/36406254170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56346524494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/54562348226.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 8

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_off0000782f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782F 5028 bytes
SHA-256: 28c20e5e7271026f22072d94062cdbc00330f5d4526aef1931dea5b4c833bd45
font_01_sfnt_off00008948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8948 10612 bytes
SHA-256: 0792c07fe282f4f65a9484a99f5466498d45db626e132341f1fedc8adfff2a07

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