Malicious PDF — malware analysis report

Static analysis result for SHA-256 f79e5878d62a2118…

MALICIOUS

PDF

86.6 KB Created: 2020-08-19 08:41:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d04c995f6fa9bd4d5372edcdeb2f3633 SHA-1: 49bfd52e0cb53c2c230c1437e94acc7e2b47bc77 SHA-256: f79e5878d62a2118f2f6b5b6ef8a9b8d99c2b8751937db2a4b63c0c653978cae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains a heuristic indicating it's a malicious redirector link, pointing to 'ttraff.ru'. It also exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=arcsight+6.+11+console+guide' and a list of other PDF links, suggesting a social engineering lure to download further content. The presence of a 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be intended to trick users into believing they need a password to access an archive, a common tactic for evading initial security scans.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=arcsight+6.+11+console+guide
    • http://files.nicholetterouthier.com/uploads/1/3/1/3/131397996/kukaf.pdf
    • http://files.aubshealthysmartline.com/uploads/1/3/2/7/132740633/ca3f14.pdf
    • http://files.undercoverquilts.com/uploads/1/3/2/6/132695576/rufopevurison.pdf
    • http://files.sshvug.com/uploads/1/3/1/4/131438583/xobitukokuliw.pdf
    • https://cdn.shopify.com/s/files/1/0430/1353/7951/files/pokemon_showdown_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/best_discord_role_colors.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7901/files/azkar_almasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/42121695639.pdf
    • https://cdn.shopify.com/s/files/1/0437/9967/5041/files/mobodus.pdf
    • https://cdn.shopify.com/s/files/1/0431/7344/5792/files/wenowizexijebisoxuke.pdf
    • https://cdn.shopify.com/s/files/1/0435/1292/2264/files/durga_saptashati_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/9743/8875/files/broken_dawn_2_mod_apk_revdl.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f918.bin
be92ebbfd13fa2439a8decdac775c21b003b89f86acda020701d3bcea9776a8b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF918 2192 bytes
font_01_sfnt_off00010348.bin
5749920cd12af93df47df00e1596b5d8b3d0009ed5d06809f2356594b3c0dd53
pdf-font-stream PDF embedded font (sfnt) at offset 0x10348 5100 bytes
font_02_sfnt_off0001149a.bin
ddd8db59fa43d2a1405d1970af3addeab6bea2067d8d6728d2cc87895d92c952
pdf-font-stream PDF embedded font (sfnt) at offset 0x1149A 13196 bytes
font_03_sfnt_off00013f43.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x13F43 4324 bytes