Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad12c4bacba98289…

MALICIOUS

PDF

42.2 KB Created: 2020-08-05 09:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52783e589e883d2734049f387bad1511 SHA-1: fc217c0eae11a43afd72dfae3460369014c38c17 SHA-256: ad12c4bacba98289c97cb28bf38bad5a3621b560ae51ab63c8bec0500256a7dc
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious link identified is https://ttraff.ru/pify?keyword=learning+how+to+learn+idries+shah+pdf, which is designed to lure users into clicking by appearing as a search result for a book. The document body itself is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf.

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.ru/pify?keyword=learning+how+to+learn+idries+shah+pdf
    • http://files.mrsararadian.com/uploads/1/3/1/4/131453676/725d0ad5d8b20d.pdf
    • http://ditonisul.siamsacs.com/uploads/1/3/0/8/130814535/forazudol-xadazimepe.pdf
    • http://files.hibbardsportsclub.com.au/uploads/1/3/2/3/132303082/cea1231.pdf
    • http://files.rimrockeffects.com/uploads/1/3/0/7/130776725/woderug_woxaxaxus_sakibagilux.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/34111908655.pdf
    • https://cdn.shopify.com/s/files/1/0435/6882/4488/files/organic_chemistry_janice_smith_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/5836/2518/files/arthashastra_written_by_chanakya.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9173/files/48982925835.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ferenap.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/wufuderiwenizowi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4615/files/92183000613.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/jefilodulokidisepetu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0862/0701/files/53197912314.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/12383630268.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/29421978301.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/25752175251.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/yamaha_mg10xu_driver.pdf
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/52631390755.pdf
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/57054168785.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_off000066bf.bin
4c769e79ee01d0e2ceb8159128cf6101e96689b1a3f606d07b47e1c46f65aea4
pdf-font-stream PDF embedded font (sfnt) at offset 0x66BF 5336 bytes
font_01_sfnt_off000078f6.bin
63de5b7ae573b04be79aee84264df6dc46a46c741dca91450be55e1ecb8d3b3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x78F6 10240 bytes