Malicious PDF — malware analysis report

Static analysis result for SHA-256 442feef85eeb418d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-12 03:34:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83591f1a45d170fb1ffa83c0de0aef40 SHA-1: 661b42211f1ab51095f0326bed2d547293e0de5f SHA-256: 442feef85eeb418db359d298955e176de95a5ec9a6c2941d035ce615bcff2903
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to URLs that are likely part of a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=mysql+blob+pdf+php, which is flagged as a malicious redirector. The presence of numerous links, including those hosted on cdn.shopify.com, suggests a broad distribution attempt.

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=mysql+blob+pdf+php
    • http://files.endeavoursporting.com.au/uploads/1/3/0/7/130776518/161606aa6ef1406.pdf
    • http://files.silverchain-us.com/uploads/1/3/0/8/130874317/lisuda.pdf
    • http://files.shellyoga.com/uploads/1/3/1/3/131381352/46454.pdf
    • http://files.swkp.org.uk/uploads/1/3/2/7/132740965/7f7ccd2c.pdf
    • http://files.mscrystalhaggard.com/uploads/1/3/0/7/130740053/fobosel-ridizuf-sijixaxesi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9534/9666/files/powered_by_akobook_unter.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/lapogozovoxapepe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0227/3703/files/37020293335.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mudamizoxudaxusuzo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/47812232518.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/finafekamuvupuviwimabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/14538255871.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6951/files/10187937906.pdf
    • https://cdn.shopify.com/s/files/1/0447/3418/5628/files/remirimodixevevifodin.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/garajagatakugobuganer.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/18695319351.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/7786660949.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_off00006612.bin
58f135276b79cd0c3a29b98563b2536a2137e3e9c41ff5649d914aaed6ab23b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6612 4632 bytes
font_01_sfnt_off000075ce.bin
1650befe4a4dafde88eaf36a12663efc3c19b2b6c64ae7645125fbd60f0e9a28
pdf-font-stream PDF embedded font (sfnt) at offset 0x75CE 10252 bytes
font_02_sfnt_off000098eb.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x98EB 4324 bytes