Malicious PDF — malware analysis report

Static analysis result for SHA-256 13e49f2d2e9f5912…

MALICIOUS

PDF

44.2 KB Created: 2020-08-01 14:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c25b35d03978a5b3fd63eb41f6539c94 SHA-1: cb00ba38ed255d69c0426518d2ca1eb6ebf16301 SHA-256: 13e49f2d2e9f5912de42ada80bc5cd1a1d281f0f614687b5e1d7c63b9209bd68
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, with a critical finding of a PDF redirector link pointing to 'ttraff.ru'. The embedded URL and document body text also contain this URL, suggesting it's the primary lure. While no scripts were extracted, the structure and heuristics strongly suggest a phishing or malware distribution attempt via a malicious link.

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=mount+hood+meadows+weather In PDF document text
    • http://files.fiestaomaha.com/uploads/1/3/0/7/130740069/vopumasapu_poxutoxetorovev_sukotajadidufu.pdfIn PDF document text
    • http://files.sunnyandsavvyrootsco.com/uploads/1/3/1/4/131407705/a78a3aee06a387.pdfIn PDF document text
    • http://files.stanleystreetbutchery.com.au/uploads/1/3/1/8/131857494/3980500.pdfIn PDF document text
    • http://files.mjkoos.com/uploads/1/3/0/7/130739158/vagenowari.pdfIn PDF document text
    • http://files.diegelrabbitry.com/uploads/1/3/2/3/132303163/6389eee500f.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/1/0427/8360/4903/files/mefubinilupesezafumuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/79043963518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0949/8536/files/kofaputevelaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3752/2085/files/monstrous_compendium_volume_three.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7505/0395/files/59074257550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2031/2991/files/98647286740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/97460388002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/45850906102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/pudujepupikipigizufode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/40865989324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/neloger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/pijositarudik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/cuda_vector_addition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/burutomuxubiruniwifozap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7035/6632/files/84102192940.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6198 5128 bytes
SHA-256: 9f93d7a2f757510c444087470e7e01fbd46435578aac2830ec037703f228a4ba
font_01_sfnt_off000072f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F3 15828 bytes
SHA-256: 9b2ad400e8727d9c7439f1d5421a7b788a261d4cd09718509866c246c244a006