Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d902813e2bd52a8…

MALICIOUS

PDF

47.7 KB Created: 2020-08-02 21:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4a7ab6f461a4b89d4d4ef71ac8f0454 SHA-1: a295228fe96aac90a134bef19a5d5c0c15be4354 SHA-256: 3d902813e2bd52a80b393bffc78007bfd3294acf0e9fc906275e7adc93cb5d66
202 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating it's a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=carving+faces+workbook+pdf', is identified as a malicious redirector. This suggests the document's purpose is to lure users into clicking these links, which likely lead to malicious content or further infection vectors. The presence of a 'download button' heuristic further supports a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=carving+faces+workbook+pdf In PDF document text
    • http://files.joymcshaneoyler.com/uploads/1/3/0/7/130776142/gokikelemutune.pdfIn PDF document text
    • http://files.wstaylor.info/uploads/1/3/1/0/131070561/d0aaa0b764ca154.pdfIn PDF document text
    • http://files.natethehitmaker.com/uploads/1/3/1/0/131071067/db5278a9861.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/1/0428/5900/4070/files/78985706274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/25240000146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3120/5787/files/vedutekaxexuriwimufoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8924/8924/files/download_fedex_ship_manager.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/nawidaxixasofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/56006897989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/vipenunokofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1127/4914/files/29079923697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8052/3681/files/wifuximezenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6727/files/2596353449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/34474217269.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 7

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_off00007c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C36 5552 bytes
SHA-256: bf51d14130048e2204e0e188920e689503256471b0c10cb3af1a77d43a1aa716
font_01_sfnt_off00008f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F40 10128 bytes
SHA-256: 3d42878974cbb11513009511b8b79ea94102d409764840be727f0399b6424852

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