Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f404e872a60ce85…

MALICIOUS

PDF

48.9 KB Created: 2020-08-04 22:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76b625e5831d4b8093b16c5dc1067c1b SHA-1: d68b7c169265acfb61937c4f3265fd4bd6df2564 SHA-256: 5f404e872a60ce85accd72f2079465cf5a66bbfaea01da85098ed4bee25bc229
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The primary malicious link identified is https://ttraff.ru/pify?keyword=bescherelle+portugais+pdf, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, reinforcing the attack pattern of luring 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.ru/pify?keyword=bescherelle+portugais+pdf In PDF document text
    • http://files.splcwa.org/uploads/1/3/0/8/130874627/6372269.pdfIn PDF document text
    • http://files.leannastibbonmakeup.co.uk/uploads/1/3/1/6/131606583/f69f21a0b250f8.pdfIn PDF document text
    • http://files.towsonmartialarts.com/uploads/1/3/2/6/132681392/56883ee50be53c3.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/1/0430/3798/2869/files/xopotediri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6019/1651/files/58376749092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2413/7890/files/38251754168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/9179381446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/45873610070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/zabomiwokuseja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/48388473020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9827/4978/files/sifeloji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/wumuxemaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/95192665369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2896/3747/files/5286080841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2778/4099/files/57263608730.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 4

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_off00007ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CED 5468 bytes
SHA-256: 20327ffd506d3db2de2f57a20b86fec453737d8a8734358c85be47c776541654
font_01_sfnt_off00008f85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F85 12240 bytes
SHA-256: 5e0b0442c2300320daea9bc01c7316cd488c1b9345965d57f5648e777242cf63

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