Malicious PDF — malware analysis report

Static analysis result for SHA-256 f005929c4c828a3f…

MALICIOUS

PDF

43.3 KB Created: 2020-08-12 08:14:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 629c86888522cba9ef4c56d06fe83908 SHA-1: e2ca047ce02081ac06c8623fa906478e809354cb SHA-256: f005929c4c828a3fa420ea20f718895c67e338116fa9276b736905995042fbed
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=interview+preparation+guide+pdf'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic to mask the malicious redirector. No scripts were extracted from this sample.

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=interview+preparation+guide+pdf
    • http://files.georginarossi.com/uploads/1/3/1/0/131069819/surinigivoxi.pdf
    • http://files.livelovelaserclinic.com/uploads/1/3/2/6/132681694/0d9bd62565.pdf
    • http://files.stretchwithchuen.org/uploads/1/3/2/7/132740779/mewinebukaz.pdf
    • http://files.goodcharamel.com/uploads/1/3/2/6/132695455/dededazabiruk-wunanijawede-kepumaxefizira.pdf
    • http://nozatit.moneymentorph.com/uploads/1/3/0/9/130969061/9379803.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0319/files/88166524065.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3773/files/spherical_bessel_function.pdf
    • https://cdn.shopify.com/s/files/1/0441/3535/0424/files/xatunasoweredesar.pdf
    • https://cdn.shopify.com/s/files/1/0431/9988/9569/files/68109970255.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/bixak.pdf
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/gibekipobuzuzenuxo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4634/5640/files/pezipekuzis.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/kitesatesuzobolikozo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/73359599965.pdf
    • https://cdn.shopify.com/s/files/1/0433/4986/8712/files/kojovizozez.pdf
    • https://cdn.shopify.com/s/files/1/0432/4222/5832/files/tawisuri.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/87772722651.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/jvc_car_stereo_manual.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_off00006cab.bin
9a362a0d57ad49e769202cd2d6be5a094df105c4a4bed4fe18978d75a0838fbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAB 5088 bytes
font_01_sfnt_off00007e1b.bin
54518ee16e0284e2bdce264306cc1117ea9b58b5a92742a846d1dd3b12bb77ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1B 9968 bytes