Malicious PDF — malware analysis report

Static analysis result for SHA-256 20cb1ec419f3b376…

MALICIOUS

PDF

42.8 KB Created: 2020-08-11 05:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8307e642134b34bf3b2aaae6d33257d SHA-1: f801ed26540b0ecdbcad86b7c461e05b4f5171c3 SHA-256: 20cb1ec419f3b376e5de9edbd870d9b956b2f37f714d1ff2b6e0ee4f7375c235
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a phishing or scam attempt designed to lead users to malicious infrastructure. The document body and metadata are consistent with a PDF generated by wkhtmltopdf, likely used to obfuscate the malicious links.

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=bookmark+pdf+chrome In PDF document text
    • http://files.ferretsandfriends.org/uploads/1/3/0/7/130774990/zovinem_befew_vizakimiri.pdfIn PDF document text
    • http://julamatij.orangelaboxford.com/uploads/1/3/1/6/131637814/483859cd.pdfIn PDF document text
    • http://tedodin.katherineinezmesa.com/uploads/1/3/0/7/130776811/lugozekolujukisuzena.pdfIn PDF document text
    • http://files.saujs.co.za/uploads/1/3/2/6/132681824/8694376.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/1/0432/5516/9186/files/wibiwus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2630/8510/files/90099374799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7845/1351/files/vimizexowumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/13255171070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9208/8734/files/fepevipibufezofegar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/lekapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/66089594102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/lukamipuzerofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/wolf_handbook_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1942/6197/files/dogomoxo.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_off000068d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D6 5296 bytes
SHA-256: a3dffd07e57ef3197cf8262693efcda4a260786d0ccd7398b05ed1890b44079d
font_01_sfnt_off00007abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABB 10816 bytes
SHA-256: ec6822332a09274bb3c805caee526b2b4767da9fd25415c59c2d58f282ac281e

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