Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ad19d808c4daa6…

MALICIOUS

PDF

43.4 KB Created: 2020-08-23 21:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5af635719cc5eb34cb9a6d34b35acf9 SHA-1: 91e017b5559bfffc5da48d680a5ca5240607dfe7 SHA-256: 79ad19d808c4daa6ce4aa902ade8b0eb3b8d7ed0ede4c09ca475f3a01715bf82
194 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to a redirector service at 'ttraff.ru'. The document body, though heavily obfuscated, appears to contain the same redirector URL and several benign Shopify URLs. The presence of a malicious redirector and a large number of external links suggests a link farm or phishing campaign designed to lead users to malicious content. No scripts were extracted from this sample.

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=communication+skills+presentation+pdf In PDF document text
    • http://files.rekindletheflame.org/uploads/1/3/1/3/131379049/nodenowozokef-nonabab-wulojebapitovek.pdfIn PDF document text
    • http://files.partnersdrivingstem.org/uploads/1/3/2/6/132681199/nurasinuz.pdfIn PDF document text
    • http://kubazumal.discerningheartsministry.net/uploads/1/3/0/8/130814328/fawokuto_nefisudejilum.pdfIn PDF document text
    • http://files.wateam.net/uploads/1/3/1/3/131398252/0ba78270d9.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/1/0432/8187/5104/files/41703102824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0060/1504/files/57562272539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/90212766089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/lusuxelurafifop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/13855904187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/11785163078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2268/4058/files/adobe_photoshop_tutorials_in_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4051/7793/files/94940688445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3776/1437/files/minecraft_1._6._4_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6668/7642/files/pmbok_6_agile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/11792188889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3508/6248/files/gevobuzilaburavazaruro.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 1

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_off00006c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C40 5268 bytes
SHA-256: 3f7ffa5b522b4bc096384acacbd779117b5655781d929453cad5be50d75bd430
font_01_sfnt_off00007e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E12 10024 bytes
SHA-256: d4978c17de2c38c541560912be57543346820b81050d46c7d1c7b1f377c7e4b3

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