Malicious PDF — malware analysis report

Static analysis result for SHA-256 d336fbbb90994a3a…

MALICIOUS

PDF

31.6 KB Created: 2020-08-02 22:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2047272c957718875637d4d5f667a293 SHA-1: 9ebb596f0d0edab0055b8347a96dfd87839d59e7 SHA-256: d336fbbb90994a3ac3165463359c4ee8c93019cc8628c0d8aa3a52f61720a592
194 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a malicious redirector link. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links pointing to external resources. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=cyclops+depth+module+mk2', which likely serves as a gateway to further malicious content. The document body contains garbled text and embedded URLs, reinforcing the malicious intent.

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.cc/pify?keyword=cyclops+depth+module+mk2 In PDF document text
    • http://files.athleticfootballgroup.com/uploads/1/3/1/8/131858791/3655000.pdfIn PDF document text
    • http://files.megremedialmassage.com/uploads/1/3/0/7/130776573/7297827.pdfIn PDF document text
    • http://files.pbrcride.com/uploads/1/3/2/7/132740278/kepuragawabesak.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/1/0433/5727/4270/files/zelesavurojekejiwabixep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/sugiwawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/soruri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5933/9679/files/76345000684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/18955037022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9101/8396/files/buxamododatesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/xukejusekodiremixasek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/neravemujuladupupaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/nowafiwifezeninozitev.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 4

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_off000041b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41B5 5208 bytes
SHA-256: 7fb6ee97500b205977b6fc70a6a075b953864a31176274ad5b3f48536360de6a
font_01_sfnt_off00005350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5350 9048 bytes
SHA-256: 7ec42becb1dd3bfe4beba528fbb6b356c215bbd7e52c32f6d79fc7732f64d78d

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