Malicious PDF — malware analysis report

Static analysis result for SHA-256 3529a9db5605f937…

MALICIOUS

PDF

43.7 KB Created: 2020-08-27 14:30:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85e0860f6454d99f5b1688b455a4f072 SHA-1: e09bad7fd6f9fb1b2fd6a0145460d7e031ff9033 SHA-256: 3529a9db5605f9377ae94e1ff4cb856978a775664ef82ce5747e161579a2b87c
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=ares+descargar+musica+mp3+gratis+sin, which is flagged as a malicious redirector. The document body text, though heavily obfuscated, contains references to music downloads, suggesting a lure to entice users to click the malicious link. No scripts were extracted from this sample.

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=ares+descargar+musica+mp3+gratis+sin
    • http://files.reanalysts.net/uploads/1/3/0/7/130775286/ritavaxofibalo.pdf
    • http://nowewem.musemodelsdarwin.com/uploads/1/3/1/8/131856543/f1ccce84f8be80.pdf
    • http://paregupel.longcrendonfilmclub.com/uploads/1/3/2/6/132682090/7445147.pdf
    • http://woretu.salemhistorymatters.net/uploads/1/3/0/9/130969772/daworumufesalojalig.pdf
    • https://cdn.shopify.com/s/files/1/0432/6119/8500/files/22812610122.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/free_bible_study_lessons_for_adults.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/xediwutupubofuxagosuke.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/22078551112.pdf
    • https://cdn.shopify.com/s/files/1/0439/0053/4952/files/lukiriminegusuzeped.pdf
    • https://cdn.shopify.com/s/files/1/0428/7892/7011/files/eve_s_apology_defense_of_a_woman.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/clockwork_planet_season_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/4220/9945/files/131337655.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/gajapatuvenazex.pdf
    • https://cdn.shopify.com/s/files/1/0431/7727/9652/files/rivod.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_off00005ed0.bin
209b805b1d122c699c5e5ccecd32323816cbba1966136aecf8cef99780fce530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED0 5284 bytes
font_01_sfnt_off000070a7.bin
24a0c4b6e8efb396af7baaef8ffa2c863b046ce795dba08c066557db08dbdc5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A7 10268 bytes
font_02_sfnt_off000093c5.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93C5 4324 bytes

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