Malicious PDF — malware analysis report

Static analysis result for SHA-256 0194be7080720d55…

MALICIOUS

PDF

53.3 KB Created: 2020-08-24 03:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c0b989882b1c3bb1f4783426bc26f5d SHA-1: 38da586dba52fc0ef7a2aa831c66b62a902a0b2f SHA-256: 0194be7080720d55404479df77e34f3c38a435e9eaefa40b78bc8e477c2604ca
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though obfuscated, contains text related to "cyber discovery answers" and a URL that aligns with the malicious redirector, suggesting a lure to trick users into clicking through to potentially harmful content. The ML classifier also strongly indicated maliciousness.

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=cyber+discovery+answers+2019+challenge+5 In PDF document text
    • http://files.indusvastra.com/uploads/1/3/2/7/132712251/kaneb.pdfIn PDF document text
    • http://files.maricasts.com/uploads/1/3/0/7/130775704/terizatujanumegov.pdfIn PDF document text
    • http://fevirodi.workinnvision.com/uploads/1/3/0/8/130813528/runipimol-muzegi.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/1/0430/5698/8311/files/secured_loan_agreement_template_uk_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/28761569568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/74101908957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/onimusha_trick_box.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/fezubupisalowuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3495/8229/files/aurora_borealis_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/34497366886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3366/4420/files/junenaxarokekaginizotigum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/6428/8409/files/23459409469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5507/7790/files/32119011076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0786/8060/files/vukadozezurixosef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/71041684869.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 3

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_off00008dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEE 6108 bytes
SHA-256: 90659052305a8c28297538dbf9e1457e34a200035b745d855de6b86f43aa254c
font_01_sfnt_off0000a2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2CD 11120 bytes
SHA-256: afa6eddee6db178709db4ccf91487f86c314cdeb11a911ed80ab41d47fe4e190

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