Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bc9dc4e18c0594d…

MALICIOUS

PDF

49.9 KB Created: 2020-08-11 04:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8cd0d76084966729e75b5812b5c2f651 SHA-1: 2e9ec727c29edbe1a0e7e1f183748fa2fd8b3ebd SHA-256: 2bc9dc4e18c0594dc81218f6c1f7111bb3c92a0f36f6398c84d44a9cf0e6ca6b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO link farms or to distribute malicious content. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=kirchhoff+s+law+physics+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure users to this malicious site. 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=kirchhoff+s+law+physics+pdf In PDF document text
    • http://lumaposi.spankthecarp.com/uploads/1/3/2/6/132683071/vugokiwekebupeg.pdfIn PDF document text
    • http://nuwek.adventuresinfaith.us/uploads/1/3/2/6/132695818/17dbb.pdfIn PDF document text
    • http://files.accordingtophillips.com/uploads/1/3/0/8/130874647/5851124.pdfIn PDF document text
    • http://files.blackstrait.com/uploads/1/3/0/9/130969241/nazizigafev.pdfIn PDF document text
    • http://gumiden.stephanieteresesimonmusic.com/uploads/1/3/2/6/132696414/4849743.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/1/0430/9060/8285/files/41221452104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/dunanojaweruvelaneguki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1591/2098/files/11504284563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3798/0834/files/venukedajizowagamipawetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2506/1272/files/download_partynextdoor_two.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/rifexaxugaxuxuvojiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84593422723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/halloween_havoc_1998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2231/files/55779663255.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 6

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_off00008503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8503 5404 bytes
SHA-256: a7ec2ed74f2bf4b2625b3d78db457415101c5861642ab345ceae8504bc178677
font_01_sfnt_off00009775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9775 10396 bytes
SHA-256: 4e9950b57fb904557ca5bc691e9d687ba4723cb82c3724f2d693426ac62d146d

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