Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a6c78e7c927f17…

MALICIOUS

PDF

46.3 KB Created: 2020-08-10 05:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84ead4fe7aa5a873c30e46e41e47945a SHA-1: 00bda81cd482f1c7a6052fb1ab42a2254596056b SHA-256: c5a6c78e7c927f17196df711185fbe1275d6aa52ad731ef80804b81450242a79
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, contains text related to 'Gta san andreas cheats pdf download' and the malicious URL. This suggests a social engineering lure to trick users into visiting a malicious site, likely to download malware or engage in phishing. The presence of numerous links, many pointing to Shopify, indicates a link farm for SEO poisoning to increase visibility of the malicious lure.

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=gta+san+andreas+cheats+pdf+download
    • http://files.cvwdi.org/uploads/1/3/1/4/131407818/5549703.pdf
    • http://files.amicilyricopera.com/uploads/1/3/1/3/131398236/0a47f.pdf
    • http://dagusafow.bristolbuildingcompany.com/uploads/1/3/2/6/132681947/jasidoguvin_diwunemarunafer_kopobalamix_xotisivinut.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/apache_lucene_search.pdf
    • https://cdn.shopify.com/s/files/1/0437/2535/7206/files/66270633917.pdf
    • https://cdn.shopify.com/s/files/1/0434/8218/5893/files/telephonic_interview_questions_and_answers_for_freshers.pdf
    • https://cdn.shopify.com/s/files/1/0434/1396/2919/files/albertine_disparue_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/jemopukukijebedexizo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6949/7753/files/59455594506.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16485275060.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/enviar_mail_con_phpmailer.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/49161907466.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdf
    • https://cdn.shopify.com/s/files/1/0435/9821/7374/files/gufutetetajunilelorepegu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6110/9155/files/88242996205.pdf
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/phg_komtel_login.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_off00007528.bin
8f1bf14d3085cc27f1a1d5bd1a6970595f5cb22659d349821ae300375f0ef452
pdf-font-stream PDF embedded font (sfnt) at offset 0x7528 5368 bytes
font_01_sfnt_off0000877a.bin
935e83bce5243f5c4f495e0f45d02083cc85cc8a093344cefe222349559a116c
pdf-font-stream PDF embedded font (sfnt) at offset 0x877A 10652 bytes