Malicious PDF — malware analysis report

Static analysis result for SHA-256 3077c033e738dd67…

MALICIOUS

PDF

35.2 KB Created: 2020-08-12 19:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fedf1f5f098706afc5f4c8134a1e8a6a SHA-1: ec967de809b36aeeca91c62991849a552e08492b SHA-256: 3077c033e738dd67916ff073b48ab0e7ffc3d77f0042d86d7c474d7377b9935b
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains and one primary link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL for the malicious redirector, suggesting the intent is to lure the user to this site. The presence of numerous links, many appearing benign, is a common tactic to disguise malicious intent.

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.ru/wb?keyword=algebra%201%20word%20problems%20worksheets In PDF document text
    • http://files.collection14.net/uploads/1/3/1/0/131069968/vakajuwu.pdfIn PDF document text
    • http://files.campmather.org/uploads/1/3/2/6/132695615/davadoxotasere.pdfIn PDF document text
    • http://files.heritagephilharmonic.org/uploads/1/3/2/7/132710491/zibulajukopipu_tatajopivedije_fazelejorufojim.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/1/0435/2484/9815/files/taking_action_on_adolescent_literacy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/99181721673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/48582515366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5842/files/nevegumoxotoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8217/6920/files/jalowoxixemoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/ratio_and_root_test_for_convergence_of_series.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/13183617737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/73212284518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/49145640892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/bodoziwatuledosefal.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 4

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_off00004d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D5F 5708 bytes
SHA-256: 6e665146a9a6906a697c9dc2840f1132fce347a6ae843f8b189c772ec3d3f65a
font_01_sfnt_off000060b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 9300 bytes
SHA-256: a3636409e45d0bb3e8825fdaf59ce1c9e7ea54ad2147031d6d2c461b01d55e62

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