Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d7b635eea8134c…

MALICIOUS

PDF

49.9 KB Created: 2020-08-11 00:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9de231ecd35412381a5e024f078052cd SHA-1: 043569363e0aa5a3bc64a09f8abfe70c1452d510 SHA-256: 47d7b635eea8134c79779b0ab201e17c2cb0157af3169fd12313598aef3ccbd1
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=kati+vagyok+alkoholista+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering lure.

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.cc/pify?keyword=kati+vagyok+alkoholista+pdf
    • http://files.cakesbylexi.com/uploads/1/3/1/4/131453136/325759.pdf
    • http://files.ledge-island-gallery.com/uploads/1/3/2/6/132682090/1097289.pdf
    • http://files.alexandrahaleyart.com/uploads/1/3/0/8/130814280/9147201.pdf
    • http://files.tntchildcare.com/uploads/1/3/1/0/131070011/digelagijagaxenifu.pdf
    • https://cdn.shopify.com/s/files/1/0440/4379/6645/files/30499222739.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/tivipidakurilezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/97271342619.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/famous_autobiography_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/9899/6889/files/werilanele.pdf
    • https://cdn.shopify.com/s/files/1/0432/9730/8840/files/84025884111.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/birumazopuwijin.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7205/files/31468471320.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3929/files/20719708884.pdf
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/rinunepisezad.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/bufejisoku.pdf
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/puwusenixenefuvosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6872/6171/files/wokedubikiwivada.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_off00007479.bin
d86fe44a72b074eb972c66fc7a25add0ce44a810e318b4476ef156ceab4394e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7479 4964 bytes
font_01_sfnt_off00008577.bin
72172a400958a6e2a7708ec40c2e9ec97046f1b86cee09f94a6d5fd48c6099de
pdf-font-stream PDF embedded font (sfnt) at offset 0x8577 12024 bytes
font_02_sfnt_off0000aab0.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB0 4324 bytes