Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b4298311ff049da…

MALICIOUS

PDF

52.7 KB Created: 2020-08-07 09:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0a717c89b0197c3809a768ccc824b67 SHA-1: ce6ad282b9e13dd6fedde438fb77f29bc7478fb1 SHA-256: 1b4298311ff049daabad6e3efcbb640f8e359aa0969953871ba69ba9fe422cdc
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a link to a worksheet PDF. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to lure users to malicious content. The ML classifier also strongly indicated maliciousness.

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=simplifying+algebraic+fractions+worksheet+pdf In PDF document text
    • http://files.harvardseducation.com.au/uploads/1/3/1/3/131379099/3910949.pdfIn PDF document text
    • http://files.erinmerrill.studio/uploads/1/3/1/3/131383514/89887.pdfIn PDF document text
    • http://files.libertyeliasmiller.com/uploads/1/3/0/9/130968906/8486156.pdfIn PDF document text
    • http://files.artisanbuiltins.com/uploads/1/3/1/6/131606345/lalazafonovukadej.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/1/0428/9835/8432/files/30553092986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/learn_palmistry_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/dojiludego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7442/8829/files/29545436302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6647/files/dr_cindy_trimm_prayer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/67061566624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/58689386794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/mariloruzonivoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4454/files/wuwadugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4460/8932/files/14914826964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7194/6398/files/nefiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/2193936013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/38157486719.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_off0000854b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854B 6068 bytes
SHA-256: 29dd093ca43e53f97a74dfd5828c5329d4633f8416bbc2c2ec2feb0adef5686a
font_01_sfnt_off000099de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99DE 14096 bytes
SHA-256: f374af5944b86e6c2db3ac57cc24462105e8fae73107cc8bece1ad173cc34553

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