Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2dfd9a5f8bccb4c…

MALICIOUS

PDF

39.9 KB Created: 2020-08-22 23:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70abfce4d04e675493eb94554f1adff0 SHA-1: 9f0e83b2804aa8079c03772a31036f9c283e183c SHA-256: c2dfd9a5f8bccb4c1624882e8fced971d45fe5b12cd52765823a6be470d99c86
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains the string 'Vault bypass app free' and the malicious URL, suggesting a lure for potentially unwanted applications or phishing. The primary attack vector appears to be directing users to a malicious redirector.

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=vault+bypass+app+free In PDF document text
    • http://kapij.cardiganbayregatta.co.uk/uploads/1/3/1/4/131438096/cdc3b3557212d66.pdfIn PDF document text
    • http://files.eguastella.com/uploads/1/3/1/8/131871690/4656610.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/1/0432/9072/2469/files/wajizudinetofili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5263/7091/files/38484473908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/23458744652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/dedelegapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5341/6601/files/conversions_worksheet_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/93805671792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/edward_maya_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5661/7877/files/instagram_mod_apk_onhax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/7773/0209/files/microsoft_dynamics_ax_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/78199124295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/houghton_mifflin_math_expressions_grade_5.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_off00005ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF7 5104 bytes
SHA-256: 72d6098cb920063cf8111fddf3b9c2db8df161da977798155ac490e764adf7d1
font_01_sfnt_off00007067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7067 10196 bytes
SHA-256: 387033f60452fe5220b9159556c60732e1a53dc0a9415393fb1af93cc9a31a47

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