Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdefda69c6c6d572…

MALICIOUS

PDF

62.7 KB Created: 2020-07-31 09:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 758d3feaf8d0d4c051277aaace2fee41 SHA-1: dbf9d32b60f2ff64da0dd2814a68358271e791e2 SHA-256: fdefda69c6c6d572f6a8a0dcc5aa22fdc587d1cc09ccd281dfdae84578fb929c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating it's a link farm pointing to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=investment+casting+process+pdf'. The document body text is heavily obfuscated, but the presence of 'investment casting process pdf' suggests a lure to disguise the malicious intent. 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=investment+casting+process+pdf In PDF document text
    • http://files.vancareproject.ca/uploads/1/3/1/3/131380889/dupikusaxojabe.pdfIn PDF document text
    • http://files.visitmojave.com/uploads/1/3/0/7/130739564/8759033.pdfIn PDF document text
    • http://files.morjimcocopalms.com/uploads/1/3/1/3/131384789/2a0aea98a146c0c.pdfIn PDF document text
    • http://files.lifeasabowhunter.com/uploads/1/3/1/4/131407357/1179617.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/1/0439/5086/6590/files/ridofelavokikupam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/ruzinatuxurumedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3981/7890/files/17991053341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/funutuletiviwuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2301/5836/files/kudabake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1076/8546/files/70443764432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/vunupijis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/66445590878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/24387572630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/27127794447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/files/32373251492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0294/3909/files/livitevozoverijujurelod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/ledenulunidotimovezomawef.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_off0000b838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB838 5228 bytes
SHA-256: bcf09372ddc7429d33ed24a04704b4d1f5b34226025b7730ad26764e5fe759a2
font_01_sfnt_off0000c9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E1 10372 bytes
SHA-256: 5c82d85738508ebf56259911ba9258960147a63d6057422a9a9712e3200e9111

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