Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcebbdab83e60077…

MALICIOUS

PDF

39.6 KB Created: 2020-08-02 07:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aea1cb1169639f82d4c9fc32615d9aed SHA-1: 40231b619bf29edf1f065c936979ae607bb983ba SHA-256: fcebbdab83e60077262fe34bc532e473c02a4159cde2ca01a0c5227c457eb2f0
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com). The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site. 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=sony+icf-+sw7600gr+manual In PDF document text
    • http://files.kortarsmuveszet.com/uploads/1/3/1/4/131453919/24595d06c870c9a.pdfIn PDF document text
    • http://files.safedreams.org/uploads/1/3/0/8/130874246/df246d176e3.pdfIn PDF document text
    • http://files.bethesdawinestore.com/uploads/1/3/0/9/130968934/kimowo.pdfIn PDF document text
    • http://files.westequip.com/uploads/1/3/1/8/131871821/8e24942d17c.pdfIn PDF document text
    • http://files.seiburyusanjose.com/uploads/1/3/0/7/130775180/1353430.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/1/0436/1958/2110/files/70811864192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0383/7591/files/shell_shock_aimbot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5672/6170/files/pemogidusovegugeneku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/tokiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3947/2288/files/46380691839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puwojadudabub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4578/8584/files/41588676671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3076/4968/files/99731720818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/dubodipoligok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9498/1273/files/funon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/lifekikibajenilev.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 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_off0000531c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x531C 5908 bytes
SHA-256: f1b9d4d919675257c05344492d9ae223ec16a28ac7cb4df90ee3a38c515e49fe
font_01_sfnt_off00006716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6716 1404 bytes
SHA-256: d4369e47632733e46257c3f93dd0e17dec22e047d9682faf3c4aef52e6aadfd3
font_02_sfnt_off00006eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB9 10168 bytes
SHA-256: 1eee8c7fb066e4812da087292c32f78cbb217c8c9d84636b530875194d5b27e0

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