Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab52244d417cbb62…

MALICIOUS

PDF

45.0 KB Created: 2020-08-17 17:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5188d16fdcb6a147a9d6c533c8f746f SHA-1: dbb258c8d99c330199b73a35a829ac075398963d SHA-256: ab52244d417cbb6240cce83e242baa9d88abde3dc4ae6ad1578a17966c104b10
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though partially corrupted, includes the search term 'bd full form medical term' and the malicious URL, suggesting a lure to trick users into clicking the link. 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.com/pify?keyword=bd+full+form+medical+term In PDF document text
    • http://files.puldinauto.com/uploads/1/3/0/7/130775171/depimob-kuxenafobix.pdfIn PDF document text
    • http://files.mariescatering.ca/uploads/1/3/1/1/131164252/2568661.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/1/0436/1011/2163/files/afcat_exam_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/album_terbaru_bts_face_yourself.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/game_design_theory_and_practice_second_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/98541027754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1591/4151/files/43991507911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0775/2861/files/reser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/jatajiwunidekoxir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/41565185012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/57092470185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3331/0870/files/preliminary_general_maths_textbook.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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
font_00_sfnt_off00005fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEE 5036 bytes
SHA-256: f9a46ce4817484952fc3e168575821dbf43c5bbb9b23c10a9d0fc72f7a01546e
font_01_sfnt_off000070f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F0 9708 bytes
SHA-256: fa59928dd9db2ccc075351a7b76d82a58e57870d47e6e78e549fda41c9e65910
font_02_sfnt_off00009251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9251 16160 bytes
SHA-256: 71965a19a7f9335088809374b0d641e6d4a160bd395340b351c68b22b5e6656e

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