Malicious PDF — malware analysis report

Static analysis result for SHA-256 28db7a57380ec9d3…

MALICIOUS

PDF

42.0 KB Created: 2020-08-20 06:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df63b81c71cd036376e3ad63f7d9e92a SHA-1: e6b47dbd3302ae7894eca6b364346b1abb7857a1 SHA-256: 28db7a57380ec9d319311d936e706fdcd80322485e79289351253d709fea956c
194 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', which is flagged as a malicious redirector. The document body also contains the same URL and text suggesting it's an online tool, likely a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, many hosted on Shopify. The ML classifier 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=edit+pdf+image+text+online In PDF document text
    • http://mobali.renwickpark.com/uploads/1/3/1/3/131381679/doxinofekodoni_gatujevabab_zijiz.pdfIn PDF document text
    • http://files.canelitaart.com/uploads/1/3/1/0/131070602/7607214.pdfIn PDF document text
    • http://bifegofet.fitnessnco.com/uploads/1/3/0/9/130969192/9492520.pdfIn PDF document text
    • http://zijez.uclagoingglobal.org/uploads/1/3/1/4/131483036/07fc9b3.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/1/0433/2843/8427/files/aeneid_book_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6433/6290/files/23636937964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/54597375487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/anova_minitab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8582/4154/files/26367268374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6404/9318/files/naputalawetip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4134/2108/files/18083271757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/40529826622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0825/1288/files/21454347926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5920/6561/files/nobene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9099/1521/files/big_w_job_application_form.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_off000066a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A9 5112 bytes
SHA-256: 8ecab9c25d1c591264912137068bd14dcc1afe3e6d8227bd03f40a8825faa0a6
font_01_sfnt_off00007812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7812 10352 bytes
SHA-256: b3f09ed7068f263086798531a17c15bd7465caa341def6b52db1d139a57856fb

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