Malicious PDF — malware analysis report

Static analysis result for SHA-256 52894f57439e0e38…

MALICIOUS

PDF

37.1 KB Created: 2020-08-23 09:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 030385b39c57dcfe98d5919365d57d11 SHA-1: 0e04ac5078b6fd7ed6b685b6fe268749977a7c76 SHA-256: 52894f57439e0e38b1985492187e9e9ee0ad0deff4d971d7d58bc82fdb3f3d34
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though partially corrupted, includes the same URL and a reference to 'wkhtmltopdf', suggesting it was generated programmatically. The presence of a large number of external links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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=pencil+drawing+flower+pictures+free
    • http://files.ppisurrey.org/uploads/1/3/0/7/130739227/xogojakeki_siresurusabadam_bamowejow.pdf
    • http://sinar.thedadventurist.com/uploads/1/3/0/7/130738667/donegulera.pdf
    • http://files.wombwelltownfc.net/uploads/1/3/0/7/130740624/dd7e0f.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/woxojonibopis.pdf
    • https://cdn.shopify.com/s/files/1/0459/5659/5871/files/43132425879.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6497/files/50568505617.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/interview_questions_for_marketing_executive.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/plague_inc_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/30246631799.pdf
    • https://cdn.shopify.com/s/files/1/0432/4877/9426/files/head_over_heels_broadway_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/gotopugigisuxivemuna.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7407/files/damineremadawunokamuje.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_off000045b6.bin
dea5e3e724395a13579beeacb0100496dc891e7225fae5b0773b7e64cdf1bccf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45B6 5296 bytes
font_01_sfnt_off000057cd.bin
589bd85d5280f1882f3540f49ed2ffd2874cc7bb627b58fdbec1fd98c5de199c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CD 9964 bytes
font_02_sfnt_off000079b4.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79B4 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.