Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fdb00b18de889c8…

MALICIOUS

PDF

41.2 KB Created: 2020-08-13 01:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b65804f53fe6039c22ac42449e5a51c7 SHA-1: 0e4808fc1963c891c9f05b6b16cef744d7e36318 SHA-256: 2fdb00b18de889c8554d98f7769f90f15122e6ec6a9f1331b78cd989839bf222
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=el+mesias+tropical+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, many of which are hosted on cdn.shopify.com. The ML classifier also strongly flagged this PDF as malicious. The document body contains obfuscated text and the primary malicious URL, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=el+mesias+tropical+pdf
    • http://files.margaretgriffithsilverjewellery.com/uploads/1/3/2/7/132740900/balomi_piboj_monidikuwabota.pdf
    • http://xajopanet.clarlennursery.org/uploads/1/3/2/8/132815732/kakenotes.pdf
    • http://files.womenartistsreaction.com/uploads/1/3/2/3/132302863/8d22be5d98d153.pdf
    • http://files.saclegalprep.com/uploads/1/3/2/7/132740584/7fb6357db58d5.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9284/files/2017_toyota_tacoma_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/vuxifukamugexefebejev.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1734/files/94788117612.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/85409160939.pdf
    • https://cdn.shopify.com/s/files/1/0435/2661/9288/files/700722517.pdf
    • https://cdn.shopify.com/s/files/1/0434/3971/8562/files/17_hp_kawasaki_engine_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7460/files/noxolenopazi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/bilafaviva.pdf
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/46323328141.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/mokifaragepuzegepa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/vilotuvulegaserenenufo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9613/0211/files/17280789831.pdf
    • https://cdn.shopify.com/s/files/1/0436/1574/8253/files/74184542107.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/mizelipaximezibagilur.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_off0000651c.bin
dabb7131f956c38cb154664eec99ca57cf08da71f2261af9826ea50e13d445f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x651C 5256 bytes
font_01_sfnt_off000076e5.bin
c91cade9216c2d438ddd7b0d54d767cfc376c5ec1f737f663f8f412abd50ef07
pdf-font-stream PDF embedded font (sfnt) at offset 0x76E5 9720 bytes