Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a518135256653ea…

MALICIOUS

PDF

39.0 KB Created: 2020-08-24 01:07:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9df2c248a7039dfce7a752e8c5f4f306 SHA-1: c9bc6454cace63eb507d82349dbd48830522463a SHA-256: 2a518135256653eae2c09331a3e1cadbb930dd645136fd7d930a7fd633d7e2c4
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are hosted on potentially suspicious domains. The document body, though heavily obfuscated, contains the primary malicious URL. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=coway+air+purifier+manual In PDF document text
    • http://rasawokal.idealformsnyc.com/uploads/1/3/1/6/131637136/4f3ecdc7c76adae.pdfIn PDF document text
    • http://vedupuwi.onhisrock.org/uploads/1/3/2/7/132712011/2088239.pdfIn PDF document text
    • http://files.yorkunidarts.com/uploads/1/3/1/3/131398367/kibovafi-wodumomizarexe.pdfIn PDF document text
    • http://lepugog.stjosephcommunityschool.com/uploads/1/3/1/3/131383388/006eeb49770.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/datasheet_ldr_sensor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8260/2913/files/introduction_to_statistical_learning_hastie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/the_economist_may_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/pinball_wizard_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4520/7714/files/yahoo_answers_health_and_beauty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4909/0978/files/rebowuxusimoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/69965771862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/36091663011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/98253456436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5411/8550/files/39848934333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8959/0427/files/puvedifomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0890/9734/files/96043895517.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 1

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
font_00_sfnt_off00004db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB0 4888 bytes
SHA-256: 7bf7997bfcdd0189d425157ba184696d9195f6fd7d2d7be21fe61e33629eb077
font_01_sfnt_off00005e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4C 10188 bytes
SHA-256: 07ebf2a5e30c7d4a6ab9d5a3feede886039d670c3902bf721c441069f0b62e26
font_02_sfnt_off00008127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8127 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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