Malicious PDF — malware analysis report

Static analysis result for SHA-256 618bca6694fd7101…

MALICIOUS

PDF

35.3 KB Created: 2020-08-13 15:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d674961339f930efd4ef907e9fe44cc SHA-1: e8d969d38dd21ec1ae489157afa518a56e150453 SHA-256: 618bca6694fd7101e21e1d28e972009424a66509ead7423dc1016abdb7b29d1f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded links, with a critical heuristic firing indicating that it links to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=quod+aliquantum+pdf', which is likely used to obscure the final destination of the attack. The presence of a large number of external PDF links suggests a link farm or SEO abuse tactic, potentially to distribute malicious content or host phishing pages.

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=quod+aliquantum+pdf In PDF document text
    • http://files.darkderby.com/uploads/1/3/1/3/131381682/pinijimudix.pdfIn PDF document text
    • http://navoge.zikhafrimainecoon.com/uploads/1/3/2/8/132816202/duguju-rezejusu-nusuk-vavaligadaz.pdfIn PDF document text
    • http://files.athenaacademia.com/uploads/1/3/1/3/131380786/lirirag_lovawepuvi.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/1/0431/0079/9140/files/fiviralono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8733/0464/files/99297011520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2724/2906/files/misty_mountain_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8883/0873/files/84724201486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/93094771672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/gary_moore_parisienne_walkaways.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6117/4684/files/zovemis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0514/7298/files/nist_time_gov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/73591784661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1003/4597/files/fojazapisariwikukedat.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 2

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_off00004c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C00 5100 bytes
SHA-256: 667dd13680594a19e79c6f93fca452a31c7b50f0874ea3a6fbe2cd6c37edce7e
font_01_sfnt_off00005d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D48 10384 bytes
SHA-256: 103747b587751c0adc79eaaa6220f3dc11f136a07bf612831d6db4ce0776d103

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