Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92f292da3768495…

MALICIOUS

PDF

43.2 KB Created: 2020-08-29 11:47:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38dafdaffa153ece0859b076aa6fb825 SHA-1: 80730044a3f0ab8d9dc6acf1d8c7f5005d9b5ebd SHA-256: c92f292da376849593f8dc7f292633d59d2d0db24dd8f84560d3e678973f788d
152 Risk Score

Malware Insights

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

The PDF contains a link to 'ttraff.com' which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'battlelands royale mod apk money latest version', suggesting a lure for users seeking game cheats. The PDF also hosts a large number of links to other PDFs on Shopify domains, indicating a link farm for SEO manipulation, likely to drive traffic to the malicious redirector.

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.com/wix?keyword=battlelands+royale+mod+apk+money+latest+version
    • https://cdn.shopify.com/s/files/1/0430/8572/5850/files/xujimizaboluwa.pdf
    • https://cdn.shopify.com/s/files/1/0435/4460/8920/files/diliburanixalatemigir.pdf
    • https://cdn.shopify.com/s/files/1/0427/7554/3964/files/32565991546.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d4ba40b1a6b4112bf25479cba565d0e.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/fukavade.pdf
    • https://cdn.shopify.com/s/files/1/0437/0418/9096/files/lejoba.pdf
    • https://cdn.shopify.com/s/files/1/0440/0106/7166/files/taxuxexixesamekonuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51031200676.pdf
    • https://cdn.shopify.com/s/files/1/0435/2360/4631/files/tenukivupatugewexixev.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/99178093630.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_off00006740.bin
3f0060b1869180e90bc3007eb43165a747632899d80f5596480e7267d3127e1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6740 5380 bytes
font_01_sfnt_off00007982.bin
bcd8e99e902760fe613f3cce9c78dd8c86eb62e2353b9ac2093df407cfd4d205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7982 11464 bytes

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