Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4f97a360f9b2e9…

MALICIOUS

PDF

43.9 KB Created: 2020-08-04 02:21:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6a8535c899d046eb8394d9f4470c4cc SHA-1: 76654d719e81147ab419d59e709de1b894e65893 SHA-256: 2b4f97a360f9b2e98176e7af549eeba7a18656cc94ab22b247f7f6602605b3b6
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate search results, with a primary malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains keywords related to construction and PDF, suggesting a lure to download further content. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points to a distribution or phishing attempt.

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=building+construction+mckay+volume+1+pdf In PDF document text
    • http://files.wao-lb.com/uploads/1/3/0/7/130775561/bevivafaxopis.pdfIn PDF document text
    • http://files.maisonmodulaireautonome.com/uploads/1/3/1/4/131483584/kilakuluwewetij.pdfIn PDF document text
    • http://files.bromswoldbikefest.org/uploads/1/3/0/8/130814902/bugus.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/1/0434/1855/0439/files/database_administrator_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9282/6517/files/muwonog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7795/0881/files/nakud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2440/6935/files/tutinesogomonobejodano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/kuzopeleni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7759/9383/files/4167187965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4469/9288/files/vibedunideveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/data_acquisition_system_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/gipolozo.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 8

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_off00005818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5818 5804 bytes
SHA-256: 9debce18097b437390d367221147727731615caadc9b34ac06e69093d7fff167
font_01_sfnt_off00006bdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDC 2116 bytes
SHA-256: 2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30
font_02_sfnt_off000075a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A8 14312 bytes
SHA-256: e9e7d242d6a4e2d77b9ad695ce52209118c3f21124ebb40c84f606f7eff52f03

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