Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89cc329ff24a5eb…

MALICIOUS

PDF

71.8 KB Created: 2020-08-17 12:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27bd9509ce0c5657521f76731d8536ff SHA-1: 27ceef82d7fe7ba5ed93542d80ee43a91cead892 SHA-256: f89cc329ff24a5eb9f45acabcfbab11f409d6e05fef111e046d38b756d4c7a0e
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=ignou+application+form'. It also exhibits characteristics of a PDF link farm, with numerous embedded links. The presence of a 'download button' heuristic further suggests a lure to trick the user into clicking the malicious link.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ignou+application+form
    • http://files.jason-fritz.com/uploads/1/3/1/3/131398117/bapoga.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/pitusabepabuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/20074460332.pdf
    • https://cdn.shopify.com/s/files/1/0437/4455/9258/files/relieving_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0437/8184/9245/files/39344282899.pdf
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/21070057402.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/kurosebifipevowoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/munejaxajikutom.pdf
    • https://cdn.shopify.com/s/files/1/0430/2854/5693/files/dixajuzabevenijukojozulod.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b81e.bin
d7b76a6ef1f13a8c91453c3b1f4abea93e72085aec01afd07d16566b4928fc37		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB81E 5096 bytes
font_01_sfnt_off0000c960.bin
70146dfbdcceea5251617e42b726d7932aa5cd34261338844d41473deb70a2af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC960 10624 bytes
font_02_sfnt_off0000ed9c.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED9C 16164 bytes
font_03_sfnt_off000102ed.bin
c759dc55a4f5b46339faee898d420b8ed8ae04769135fa9975fe34ec3fc1bb41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102ED 3968 bytes

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