Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8676d13755d8e85…

MALICIOUS

PDF

35.0 KB Created: 2020-08-11 14:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dd8c9633178e47abb42df8145931df8 SHA-1: ffd75d42366fb26b4845eb43cc9ff97c2d0a1cee SHA-256: f8676d13755d8e852ca6031b52bf74d1007656215f44002244badc4ceffa15d9
120 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=domestic+animals+pictures+chart+pdf'. This URL is presented within the document body, disguised as a domestic animals chart, indicating a social engineering lure. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting an attempt to obscure the malicious redirector or to appear as a legitimate content provider. No scripts were extracted, but the primary attack vector is the malicious URL embedded within the document.

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=domestic+animals+pictures+chart+pdf
    • http://files.refugefriends.org/uploads/1/3/1/4/131454106/zaget-noxepivi-fakimidod-ximitiwozoxi.pdf
    • http://files.davidabrehart.co.uk/uploads/1/3/0/7/130775678/3768185.pdf
    • http://divesag.fearlesshealingtherapy.com/uploads/1/3/1/3/131398362/baregotivewirab.pdf
    • http://files.aspontaneoustraveler.com/uploads/1/3/1/4/131438539/xomadu.pdf
    • http://files.peakposse.com/uploads/1/3/1/4/131453194/kabozaxofibop_gedanamizu_sasesoxevufedap.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/51764193855.pdf
    • https://cdn.shopify.com/s/files/1/0431/7357/6865/files/circuit_diagram_of_logic_gates.pdf
    • https://cdn.shopify.com/s/files/1/0434/0079/0170/files/79614916973.pdf
    • https://cdn.shopify.com/s/files/1/0437/9777/4497/files/67039942082.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/78458855440.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/koture.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/42725076946.pdf
    • https://cdn.shopify.com/s/files/1/0431/4585/5137/files/20_types_of_amino_acids.pdf
    • https://cdn.shopify.com/s/files/1/0430/3277/2757/files/rosepitet.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/romipejebima.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/66151902640.pdf
    • https://cdn.shopify.com/s/files/1/0438/7966/1736/files/exploring_psychology_myers_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/nekut.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_off00004c61.bin
c9a18f58f404ec4a96361634e7711992354882244052deb10ded38b5da5040c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C61 5396 bytes
font_01_sfnt_off00005e8a.bin
173cd6aaa9bcf1cee6f3d2cddc7046766f1cae56ba3b8c8991b66449accc9ee1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8A 9484 bytes