Malicious PDF — malware analysis report

Static analysis result for SHA-256 9993c5c1b113d016…

MALICIOUS

PDF

50.4 KB Created: 2020-08-19 18:08:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a693d83c8549b2ea59eb0a99b5d09bc7 SHA-1: 193a5f1d6d01122c6c4292b7996d67bf98d204d0 SHA-256: 9993c5c1b113d0169f8661ee63c8f9dc5963d140dd9585f67d5ece51fafb6ca8
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for an 'employee schedule template'. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=simple+employee+schedule+template+excel In PDF document text
    • http://files.allgeierchiropractic.com/uploads/1/3/1/3/131378776/begomixanasivar.pdfIn PDF document text
    • http://subun.thebathbombshop.co.uk/uploads/1/3/1/3/131398252/4576136.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/1/0431/9186/1410/files/bufar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6502/5179/files/23936579647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1758/4285/files/52084384048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8735/9141/files/guideline_value_in_velachery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9312/1442/files/pomazifiriwavedusas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/xefolijotef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/moxakezedowonoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9235/2932/files/pufoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6536/6933/files/business_level_strategy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/33922420666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/steel_dragon_task_guide_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/kadijubelowitosudop.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
🗂 Part of campaign: patelp.com 4 samples

Related samples 4

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_off000086be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BE 5492 bytes
SHA-256: 3a40d245f9c4cbda75f3d3c5a86ef34b1481d1098013c9141f5e87a54a1e1787
font_01_sfnt_off00009951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9951 10244 bytes
SHA-256: afbd42270865e947b34a4a5d98f45788814a7dc2e5463e370ae4762bebf38257

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