Malicious PDF — malware analysis report

Static analysis result for SHA-256 2837ba7938883243…

MALICIOUS

PDF

43.9 KB Created: 2020-08-19 15:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d6935693ed067558ace173d5b8c5bb0 SHA-1: 8269858ff45dfe5a5c31f3b4fa206e28e532c949 SHA-256: 2837ba79388832431a8b3eb4211113eec14b2cdda800dd71b648109ee339ef70
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.com'. Another critical heuristic indicates a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The document body contains garbled text but includes the URL 'https://ttraff.com/pify?keyword=jinja+template+variables+list', reinforcing the redirector finding.

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=jinja+template+variables+list In PDF document text
    • http://resixu.stewartislandhelicopters.co.nz/uploads/1/3/0/7/130775203/suwagefudabejib_deloledi_kebufesu.pdfIn PDF document text
    • http://files.lavernemleonard.com/uploads/1/3/1/3/131381946/vuriwer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1592/7965/files/flight_aerodynamics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3730/1653/files/wovajuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5929/0022/files/church_posters_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/5692/5594/files/44997809957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3737/1037/files/salvation_army_donation_value_guide_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/keller_williams_business_card_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1712/files/linatimafej.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 2

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_off00005919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5919 4908 bytes
SHA-256: 5fd2c78314a5eac64842d246db49db5f19db77e02649e4a16104ecb5f7d64c22
font_01_sfnt_off0000699e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x699E 13516 bytes
SHA-256: df472bcaf1f546ccd59347ce56cfee0c3e094dfb8315f4ea94c4eba8230f2d14
font_02_sfnt_off00009504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9504 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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