Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d74d29cea802c11…

MALICIOUS

PDF

53.8 KB Created: 2020-08-07 22:23:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8de289588a7a18f430c1ed24947e15a SHA-1: 2188710973bee94c9465f2ef1a74fe639e728811 SHA-256: 1d74d29cea802c115bacad284551d37d041768fa34e71ba155a87271325a6528
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the URL and appears to be a lure related to a song title. The PDF structure and embedded links are indicative of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=the+way+we+were+barbra+streisand+pdf
    • http://files.ranellekirchner.com/uploads/1/3/1/3/131382030/midejopadusob.pdf
    • http://files.aimdistributing.net/uploads/1/3/1/3/131384555/4281055.pdf
    • http://files.sreesastha.com/uploads/1/3/1/3/131380591/1866012.pdf
    • http://files.libertycooling.com/uploads/1/3/0/8/130813934/4437486.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/68916589662.pdf
    • https://cdn.shopify.com/s/files/1/0433/8571/6886/files/maha_bhagavatam_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/58661965977.pdf
    • https://cdn.shopify.com/s/files/1/0428/0378/9991/files/86251860127.pdf
    • https://cdn.shopify.com/s/files/1/0436/0581/9550/files/amls_2020_2da_edicion.pdf
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/7426555230.pdf
    • https://cdn.shopify.com/s/files/1/0434/0059/3557/files/grade_2_math_worksheets_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0450/9057/0405/files/estadistica_para_negocios_y_economia_anderson_12_edicion.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5271/files/time_lost_proto_drake_spawn_timer.pdf
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/76140162078.pdf
    • https://cdn.shopify.com/s/files/1/0440/4455/0294/files/body_dysmorphic_disorder_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/96625958065.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6807/files/vevisizedupaxodobo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/16265322720.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_off0000937d.bin
0dd12c770d90dda71de303348bb14704b64913e4f91aa7b5128cfd67362ecee5
pdf-font-stream PDF embedded font (sfnt) at offset 0x937D 5380 bytes
font_01_sfnt_off0000a5d4.bin
7d253d66a8dd73c9db1127419fb4decb6f60e961995b216dc1a6f4ab76e93ed0
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D4 10500 bytes