Malicious PDF — malware analysis report

Static analysis result for SHA-256 5345473d7ae45d85…

MALICIOUS

PDF

57.0 KB Created: 2020-08-12 09:35:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e31488e739ba0e6856cd435ab313e6fa SHA-1: a1a5889c004b99b592ca5d90609f1551a3bacf5c SHA-256: 5345473d7ae45d85c2ee505099a435bbd4f16fe4ed636e62ca8de355fb96c483
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.ru'. Another critical heuristic identified a PDF link farm, with 'cdn.shopify.com' being a dominant host. The ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains the malicious URL and other links, suggesting a lure to external, potentially harmful, 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=lobo+hombre+boris+vian+libro+pdf In PDF document text
    • http://files.episcopalchurchonedisto.org/uploads/1/3/0/7/130739895/julusetiliwejo-nevadutijumud-niwikulobefeni-zupebewunesir.pdfIn PDF document text
    • http://files.motivelove.com/uploads/1/3/0/7/130776728/9627091.pdfIn PDF document text
    • http://files.pvbcn.org/uploads/1/3/1/8/131856883/4139356.pdfIn PDF document text
    • http://dakem.newberrycoffeeroasters.com/uploads/1/3/1/0/131070420/701448.pdfIn PDF document text
    • http://files.sierranevadapork.com/uploads/1/3/0/7/130776327/pexilimubibexagasuta.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/1/0437/6556/3549/files/pifonavefibutejasejad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/catholic_encyclopedia_vol_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/guia_de_adestramento_para_ces.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4007/7981/files/65962265572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/wugemekabuxaxujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/34642539704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/labizewusizado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/5393820402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7679/6057/files/doxemaforopogokulin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3719/9257/files/zalexidajod.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_off0000a1c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1C4 5420 bytes
SHA-256: aa64a7170a84ac3411717b9b06c5d07c7fcbe1c0c403b1ca05efd3badffb1de3
font_01_sfnt_off0000b40c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB40C 10272 bytes
SHA-256: 4cf99359778993368c40d5bebab46ee406f4ac058bdef45dce4364365ac153d4

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