Malicious PDF — malware analysis report

Static analysis result for SHA-256 181e9079a96e4a2b…

MALICIOUS

PDF

43.0 KB Created: 2020-08-09 05:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9153ba53cdff84727b29c1ccd078fff SHA-1: 20164616a96b200b699fb2d9d85ce9cdea197c12 SHA-256: 181e9079a96e4a2b28f5540ba448d5c13e4e4e2a9d126ebe361d3594d3916d2a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified as 'ttraff.com'. This technique is often used to distribute malware or conduct phishing campaigns. The ML classifier strongly supports the malicious nature of this PDF, and the presence of numerous SEO-optimized links further indicates a malicious intent to drive traffic to potentially harmful sites.

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=riyadh+cable+medium+voltage+catalogue+pdf In PDF document text
    • http://files.leaannlewis.net/uploads/1/3/0/7/130775362/7185956.pdfIn PDF document text
    • http://gurowi.modafabrictreasure.co.uk/uploads/1/3/0/8/130874284/nefaga.pdfIn PDF document text
    • http://files.kmmcfarland.com/uploads/1/3/0/7/130739719/kezubededadefuwid.pdfIn PDF document text
    • http://files.jmbmoldings.com/uploads/1/3/2/3/132303082/kimojot_vozifof_runazagezezoda.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/1/0435/5630/7107/files/80820314548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/67368294385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/ralubixejekibabizanof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/redumibifojuvabofipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8276/0870/files/analogue_and_digital_signals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/36556514949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12091312038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/bodezavosimebevarukibef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/wozuzupikirawimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9195/1769/files/dixigewemub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6698/2561/files/45327500818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6385/9605/files/38745627690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/kiboripemipibozuzoluda.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A46 5604 bytes
SHA-256: 296e56dc8fe9e411dbe99872168c25c25da228caa9cbb62ca7f0c53d000e3b41
font_01_sfnt_off00007d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4D 9776 bytes
SHA-256: bc7856bbb71dde3a5561a7d7848dd25661cc1b138f2c395f2ad19f325eaa3e98

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