Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3bd893d10446639…

MALICIOUS

PDF

48.7 KB Created: 2020-08-03 03:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d00734f2402a5c62f49c726e5240c4c5 SHA-1: a00aec00cdd274b2c5dbd7f0897dcff42ad2dd66 SHA-256: f3bd893d104466398a79871e4a42215a12f8d2f5c6861f54889a6cdf10b4d607
152 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'mod gta 5 xbox 360 online', directing users to the malicious URL. The presence of numerous external PDF links also suggests a link farm or SEO manipulation tactic.

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.cc/pify?keyword=mod+gta+5+xbox+360+online
    • http://files.wrosephotography.com/uploads/1/3/1/4/131406412/76eca58.pdf
    • http://files.5ivezero.com/uploads/1/3/1/4/131437538/boxuzuzege-jamov-susaxozokusonir.pdf
    • http://files.jillisahope.com/uploads/1/3/1/3/131381614/keduzaja.pdf
    • https://cdn.shopify.com/s/files/1/0431/2249/1553/files/90943337133.pdf
    • https://cdn.shopify.com/s/files/1/0431/5299/8556/files/wagixebo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/19368563708.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/zudumari.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6952/files/55431981211.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/xapidokafebibedala.pdf
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/xuxiromefefute.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/rijiridezabalorunifi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0120/7193/files/76383743224.pdf
    • https://cdn.shopify.com/s/files/1/0430/1452/0995/files/96649370891.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/91616288344.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_off00007ec9.bin
dcb52a79c5110123d6f75f8a4db6b45650acc839fc69e51f4a25cd920bb41961
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC9 5516 bytes
font_01_sfnt_off000091b4.bin
437e583d34fd99f6c1e2451285a9a82f6eb1a2a387ed84dcf9c2652bfcacaa6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x91B4 10620 bytes