Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74ba699b1e2d40a…

MALICIOUS

PDF

38.1 KB Created: 2020-09-03 00:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6f2eef0a918568cf3482d8339dc308b SHA-1: 6bd177b2cc9eb640444ad87bf94a9aec779d0cd3 SHA-256: c74ba699b1e2d40a2736df9c7f173bd6b648dcb0f898b13d5bbd6ae8419a4eb7
154 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a search query for "baby doll album video hd song". This link points to a known malicious domain, ttraff.me, indicating a phishing or malware distribution attempt. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.me/wix?keyword=baby+doll+album+video+hd+song
    • https://cdn.shopify.com/s/files/1/0432/1722/3840/files/blue_prism_automation_tool_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/assemblage_fichier_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/jejewo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/23959209197.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bukidesokat.pdf
    • https://cdn.shopify.com/s/files/1/0428/3400/2086/files/tabegawiduxisiwaberoke.pdf
    • https://static.usrfiles.com/ugd/b8c837_746d4a949d6e427fb7b7721d2a08138d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f123701d040f4e1290fc6ee77226c2f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbbe5d7c3b594555a9671ce984d57710.pdf
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/82997954731.pdf
    • https://cdn.shopify.com/s/files/1/0436/2423/5170/files/delijezopasawadixuvo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/46851417144.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f62.bin
8c426dd14c50dd19e67e5c7a02553c4a88e867830e42896a66fcf5ccc0f78b2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F62 5496 bytes
font_01_sfnt_off000061f8.bin
637dcbc5181cc50cccb9f839583c938d10f5d7b5830dfc8940b60d99c5a31d4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x61F8 13240 bytes