Malicious PDF — malware analysis report

Static analysis result for SHA-256 9537adcc7978edbb…

MALICIOUS

PDF

63.8 KB Created: 2020-08-15 00:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91ec199c01d23f4126a1ee62d6969130 SHA-1: 00a12625142afab6b028769e22bb2ff7e2a90ccf SHA-256: 9537adcc7978edbbbfa45f826f38ddd0d9cfd2ce18f842b8c2ec81ad1bc30035
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with at least one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate that the document is designed to lead users to external, potentially harmful sites. The primary malicious URL identified is https://ttraff.ru/pify?keyword=formbuilder+custom+validator. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the link farm and redirector strongly suggest a phishing or scam 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=formbuilder+custom+validator
    • http://viluza.boothandrichlandboutique.com/uploads/1/3/2/8/132814930/6154790.pdf
    • http://files.leadersindustries.com/uploads/1/3/1/6/131606719/gotobot.pdf
    • http://files.anewagingmovement.com/uploads/1/3/0/9/130968994/tixozijewu_palezuwane_zowat.pdf
    • http://files.anewagingmovement.com/upl
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/71238584727.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdf
    • https://cdn.shopify.com/s/files/1/0432/6329/5646/files/99247633550.pdf
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/60915420859.pdf
    • https://cdn.shopify.com/s/files/1/0438/3935/7093/files/chloroacetyl_chloride_msds.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/hungry_caterpillar_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/a4_inkjet_magnetic_paper_sheet_gloss.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/46530833498.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/dichiarazione_sostitutiva_dell_atto_di_notoriet_compilabile.pdf
    • https://cdn.shopify.com/s/files/1/0434/7166/7352/files/jowar.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/gagugitugujibotaton.pdf
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/minecraft_team_extreme_launcher.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_off00008759.bin
cbb2fdee9c23b92124204ea4e3ef267aa48947d821107394bf36d875e135ddf0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8759 5240 bytes
font_01_sfnt_off0000990e.bin
800b3f4bb0b69a2b9df867b5b78b74591b0a007804f09584c08ddaf9515c7b00
pdf-font-stream PDF embedded font (sfnt) at offset 0x990E 3368 bytes
font_02_sfnt_off0000a6a4.bin
3aec059cc763009a21c76705e0a9be02a48c09661dcbed53d525e20417afd312
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A4 16648 bytes
font_03_sfnt_off0000daba.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
pdf-font-stream PDF embedded font (sfnt) at offset 0xDABA 16204 bytes