Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8ea494c95852e7…

MALICIOUS

PDF

42.8 KB Created: 2020-08-10 23:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6334eb915f7ebf3f11f7459d9441caab SHA-1: c74224b29197b38a9c33863af17d9125d164a428 SHA-256: db8ea494c95852e7216cdd7a01c2dd2f12f3a84dada86f40b2d8a72b50ec26ef
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'medical certificate for college admission pdf' and the malicious URL. This suggests a phishing or scam attempt to redirect users to malicious content.

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=medical+certificate+for+college+admission+pdf In PDF document text
    • http://files.retirementtimeline.com/uploads/1/3/0/8/130874143/bugimoxawa.pdfIn PDF document text
    • http://files.leopardstouch.org/uploads/1/3/0/7/130739415/nasegowonimeka_xidawokixev_pedebubijixe.pdfIn PDF document text
    • http://files.petermrusso.org/uploads/1/3/0/7/130775712/3509939.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/1/0431/7573/9560/files/xalivuramupawumuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8248/0806/files/39269764847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8797/0975/files/52666197050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7763/2154/files/63261007718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/xogudowiritogemapetuvukaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/40231292001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/14131217498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/79019961920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/mercedes_a_class_brochure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4311/8495/files/sipamatudosememojuzofoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0631/1070/files/takezavukutozagimotuv.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_off00006925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6925 5480 bytes
SHA-256: 537f8180d8ff2c801b542b1624dc5f52b9cd68a494e3b7249bebdd43099f37a8
font_01_sfnt_off00007bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB4 9952 bytes
SHA-256: 448f773cc46fc63242609505e7752cd7072e5a7a4d720437cbc5f74a1a966fa0

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