Malicious PDF — malware analysis report

Static analysis result for SHA-256 55810e2306b36d07…

MALICIOUS

PDF

74.4 KB Created: 2020-08-10 00:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f865cd667d284103888b7545d8ce82c SHA-1: 2ffeefb983fc12b6bc2a9b6adef4368f4f2c98a5 SHA-256: 55810e2306b36d074176d01ef77acd0fc4184d0a5954d76bed1df3a5592db137
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, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs to a known malicious redirector at ttraff.ru, which is likely intended to lead the user to a malicious payload or phishing site. The document body, though heavily obfuscated, also contains the URL for the malicious redirector.

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=arabic+vocabulary+in+urdu+pdf In PDF document text
    • http://xagikaz.brittanysloan.com/uploads/1/3/1/1/131164250/jiger.pdfIn PDF document text
    • http://files.fundamentalmed.com/uploads/1/3/1/4/131438234/samuwuja-pepuwunopaxafu-felazanaxuxak.pdfIn PDF document text
    • http://files.brockskennel.com/uploads/1/3/2/8/132816195/abd7f.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/1/0430/8638/1207/files/osrs_ghosts_ahoy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18842325712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3546/6655/files/pizeduvosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/gudaforuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/madagojekibujijunatojedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/befezakubosixud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3948/2275/files/jenkins_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/9960108282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70282461387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0477/2000/files/jugugikexejadasodof.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000e869.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE869 29328 bytes
SHA-256: e609c7c4dd6b86cd9e900beac29f034f61ef91f985208770592b50d3b33a8d81
font_00_sfnt_off0000aba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA0 5264 bytes
SHA-256: f67b6c3934e15f6c137e34390666c042df6abe1e545da27353051e437caf40c1
font_01_sfnt_off0000bda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA0 13376 bytes
SHA-256: d93ec1d76f26a519fed6e67b18fc3f5131497da4632b91118ce566523f20f63c

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