Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc234ae1bf3227d0…

MALICIOUS

PDF

35.4 KB Created: 2020-08-13 08:23:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 235359079c4da76434079d22587a7709 SHA-1: c491d2fd0f7852ee742a24785b3c6c602f11a916 SHA-256: dc234ae1bf3227d00db7cb073dba062cc788ad746505d3110d8a9533f5f0965a
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains references to the redirector URL and a large number of other URLs hosted on cdn.shopify.com, suggesting a link farm for SEO poisoning or to obscure the final destination. 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=unidad+2+modelos+de+calidad+total+pdf In PDF document text
    • http://tufavotab.djsfitnessevolution.com/uploads/1/3/1/3/131381521/jipejewipokuso-pamulorax.pdfIn PDF document text
    • http://files.wawaudax.com/uploads/1/3/2/7/132712040/damukupa.pdfIn PDF document text
    • http://files.indianhockeyskills.com/uploads/1/3/1/4/131453897/330154.pdfIn PDF document text
    • http://files.autismispants.com/uploads/1/3/1/6/131606719/6726309.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/1/0431/5892/9570/files/47892676377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6460/4310/files/gasiladonog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/97984092692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/vefatepefatug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/cessna_t210m_poh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/83376686297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/9309393736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8017/9107/files/biology_class_11_chapter_3_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3230/5054/files/guxukazesuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/36583019121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0271/4533/files/36352428389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7440/3996/files/benadryl_xarope_bula.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_off00004c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C86 5328 bytes
SHA-256: 9bf7f4a239d257c2742ffe70f821ceb8a5aa519b668ca402d38f58c9735c0017
font_01_sfnt_off00005e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9D 10500 bytes
SHA-256: 9ca13402cb84be0af30d6bae14cfbe154566800efb8ad0d29ba70c86980b6415

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