Malicious PDF — malware analysis report

Static analysis result for SHA-256 0789efd9d1e05bb3…

MALICIOUS

PDF

45.5 KB Created: 2020-08-04 07:13:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c40c13235885c2936623559916444b8 SHA-1: 57d2163413a22fe5eaa5823cda812a9a70ac5fe7 SHA-256: 0789efd9d1e05bb38e3abf24156dc18f2eb4c919b00f664bcb36b0665ae13b73
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm designed to redirect users to other PDFs. One prominent redirector URL, 'https://ttraff.ru/pify?keyword=martial+art+tutorial+pdf', is flagged as malicious. The document body, though heavily obfuscated, contains references to 'martial art tutorial pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious link distribution.

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=martial+art+tutorial+pdf In PDF document text
    • http://files.adventuresatyourdoorstep.com/uploads/1/3/2/6/132682790/df2c46ff.pdfIn PDF document text
    • http://files.makeupbybb.com/uploads/1/3/1/3/131380756/4713546.pdfIn PDF document text
    • http://files.cleararcheryinc.com/uploads/1/3/2/7/132741385/329a7175bd2eb.pdfIn PDF document text
    • http://files.ballinloughgfc.ie/uploads/1/3/1/8/131856569/4284019.pdfIn PDF document text
    • http://files.chelmsfordtreesurgeon.com/uploads/1/3/0/8/130814611/gowepisow-dolabexewugekor-zejuliwowiw.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/1/0432/1958/3133/files/ratonaduzesexufudojenotuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8419/3696/files/33463059947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8973/1479/files/16750577856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/80947100275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/fosinidijulem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3048/5915/files/rejonami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/badekogagoriravej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/37346532857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/wimemakedinogelubevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/56636179660.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_off000076d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D4 4864 bytes
SHA-256: 4d0c19afe25fb9fc590d34bbf4b18e5f269ea0803c90b95ca96d183a926bfb65
font_01_sfnt_off00008779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8779 9860 bytes
SHA-256: 3ec99a3c64cf9b5004ef3796bcf0831b26abbc1713d95fd52da40ad6866c51aa

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