Malicious PDF — malware analysis report

Static analysis result for SHA-256 242c8d99ab2f80a0…

MALICIOUS

PDF

45.7 KB Created: 2020-08-09 01:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de0c4d1641c37ebd1cf19e8e1fcf4d1a SHA-1: eb1a721f05494b9bc37b4be77aa137562b778a17 SHA-256: 242c8d99ab2f80a0851cabb3ab578bb7c08ec291b98f08cb70061a75d6a06fb8
202 Risk Score

Malware Insights

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

The PDF contains a lure for a contract agreement form, which is a common tactic for phishing or malware delivery. It embeds numerous links, with one pointing to a known malicious redirector infrastructure (ttraff.com). The document body, though partially corrupted, contains the text 'Contract agreement form pdf' and the malicious URL, reinforcing the phishing pretext. The presence of a large number of external PDF links suggests a link farm or redirection strategy to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=contract+agreement+form+pdf In PDF document text
    • http://files.herehelpredefined.com/uploads/1/3/1/6/131637177/mejusil_wumiduparafibux_gusikinok.pdfIn PDF document text
    • http://kefit.lora-gray.com/uploads/1/3/1/3/131383483/7820790.pdfIn PDF document text
    • http://files.villa-anggrek.com/uploads/1/3/0/7/130740323/pudusilin-kebiwowajisok.pdfIn PDF document text
    • http://nobeko.firstlookliteraryladies.com/uploads/1/3/1/4/131437657/1e717354b3e.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/1/0431/3631/9639/files/21485651298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7964/6878/files/89457100074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0624/5534/files/83192323253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botudurodakokebavexosox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3979/2021/files/benefits_of_active_learning_in_the_classroom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/lamipojixefivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3327/1191/files/95651429954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2905/9994/files/23062286717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/nevifujeworalomekunimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4937/6149/files/jodujojewezizajumeximuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botezosural.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8824/6936/files/xizaxufovole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8307/1642/files/pazilu.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_off000075e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E6 5168 bytes
SHA-256: 09a36fba289e6ec4911bfccc29b0e18002bcc7617c6cc8ba0a60aaf420b3037d
font_01_sfnt_off00008765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8765 10148 bytes
SHA-256: 515fbe36060bc4bffb25b07d86272ba5176c3e7e8d9bead428e39493a47237e0

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