Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd869c5638f7d6dc…

MALICIOUS

PDF

43.5 KB Created: 2020-08-05 16:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc89b0a22df504a5af6bfbc5cd9b5cc9 SHA-1: d77b982895ee7244c4572a003a360c0dcf57c112 SHA-256: cd869c5638f7d6dc787eb53c69a9bfcbe18394c0fb2fd41fab3f0db9e1eb387f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF file contains a large number of embedded external links, forming a link farm. One of these links redirects to a known malicious infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, also contains this malicious URL. This suggests the primary purpose is to redirect users to malicious content.

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.cc/pify?keyword=d+letter+names+for+girl+hindu+pdf In PDF document text
    • http://files.theimo.org/uploads/1/3/1/8/131856318/fexogubivafeloduwap.pdfIn PDF document text
    • http://files.eloisekerr.co.uk/uploads/1/3/1/4/131453267/5d9aaceb9a80df5.pdfIn PDF document text
    • http://files.karuturi.com/uploads/1/3/0/7/130776255/puguwalafalopasogezi.pdfIn PDF document text
    • http://soxivok.boonecreekfarms.com/uploads/1/3/1/4/131408100/zakisaterazume-belosekogeki.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/1/0429/5376/9126/files/5022023456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/amoeba_sisters_video_recap_of_osmosis_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/73566815143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/wibebubadavakebadedutiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0036/3169/files/59992026817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4551/0568/files/pokizegotagopeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/32055199109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3464/7460/files/casting_spells_in_melee_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/76588009384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/20818261229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/57931780834.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_off00006128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6128 5456 bytes
SHA-256: 9750787f3be897462d8ff3673f44e6338da016fcc7045d6fa4f271cb4ee69ef3
font_01_sfnt_off0000738e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x738E 14648 bytes
SHA-256: a9944461d3ff1c42c057715e02c8787e05c94b265f5c40eb10c8746f6e578b84

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