Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13ec94309825624…

MALICIOUS

PDF

43.2 KB Created: 2020-08-02 02:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a0e0da8e59ae12ec6a005192d622ad3 SHA-1: 0846c1446954296f5607e594fe754e073fb5515b SHA-256: f13ec943098256246f7d6b7890fef1f36966e5d2b5f72637411437894c5e9fcd
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=vba+for+macs'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to shopify.com domains, likely for obfuscation. The presence of a 'download button' lure further supports the malicious intent. No scripts were extracted, but the primary attack vector appears to be social engineering via a 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=vba+for+macs
    • http://files.twirlproductionsunlimited.com/uploads/1/3/2/7/132710786/nirunimimiragiruro.pdf
    • http://files.diamondshinedata.com/uploads/1/3/1/3/131383619/97cc139e5.pdf
    • http://files.koonyagarlicfestival.com/uploads/1/3/1/1/131164176/zedafubuxuroso-tosamesuvof.pdf
    • http://files.ncam.ac.nz/uploads/1/3/0/7/130776788/a94fe6a1c2f25a.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/59972558372.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/94424898993.pdf
    • https://cdn.shopify.com/s/files/1/0430/1409/5001/files/xokuzawewozinomomex.pdf
    • https://cdn.shopify.com/s/files/1/0438/1674/7170/files/roger_kamien_music_an_appreciation.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/91408965839.pdf
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/21202623791.pdf
    • https://cdn.shopify.com/s/files/1/0433/9990/5429/files/52856574024.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9584/files/59562289837.pdf
    • https://cdn.shopify.com/s/files/1/0433/0582/8520/files/38465113593.pdf
    • https://cdn.shopify.com/s/files/1/0434/5551/2738/files/bunadarifipus.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/baruzulogakufokumusisuvo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060d4.bin
760434b656e6d5153d638c276ebdb483cd48822e98e4fbf14959ef35ec7c12be
pdf-font-stream PDF embedded font (sfnt) at offset 0x60D4 4536 bytes
font_01_sfnt_off00007029.bin
20f5115d7d00a95ba6331f3e550c906992edd52894173333f484c9a5f54fe406
pdf-font-stream PDF embedded font (sfnt) at offset 0x7029 9932 bytes
font_02_sfnt_off00009236.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9236 4324 bytes