Malicious PDF — malware analysis report

Static analysis result for SHA-256 c99a1bac17ac42ce…

MALICIOUS

PDF

48.1 KB Created: 2020-08-19 18:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 441bf3fc102ada3fbe6e4931af67f103 SHA-1: 23350529a4a9de3a3f5b9a85d52dc98f56a5cd1b SHA-256: c99a1bac17ac42ce2e654255b5c6b36e7531dea984ea61e64e71b58a0ee5c624
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, a technique often used to obscure malicious redirects. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=baldur%2527+s+gate+enhanced+edition+full+apk', which is presented as a download for 'Baldur's Gate Enhanced Edition'. This indicates a social engineering lure to trick users into downloading potentially unwanted or malicious software.

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=baldur%2527+s+gate+enhanced+edition+full+apk
    • http://gufiluxo.pezcaribemexico.com/uploads/1/3/1/8/131871462/7631071.pdf
    • https://cdn.shopify.com/s/files/1/0432/7810/6779/files/htps_windows._github._com.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/storytown_grammar_practice_book_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/74433634361.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/kofadulasinovo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7552/6042/files/react_native_zoom_in_animation.pdf
    • https://cdn.shopify.com/s/files/1/0430/9617/8845/files/nuludepo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/23204686541.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2623/files/compare_and_contrast_essay_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/3954/5761/files/ruvifasuvip.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/54425960394.pdf
    • https://cdn.shopify.com/s/files/1/0437/1916/4058/files/school_days_apk_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9750/files/brute_force_password_online.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/mosaxosusu.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_off00006fd2.bin
d0754c96481684f5a62ef753a820a94a72462f095c4f82c96ca029b5d4a7ffa0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD2 5444 bytes
font_01_sfnt_off0000824a.bin
3301349524d69a6761ab41e38e8904f019c8093c5a9b9cfcdcee7e095ba24bae
pdf-font-stream PDF embedded font (sfnt) at offset 0x824A 10252 bytes
font_02_sfnt_off0000a515.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA515 4324 bytes