Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b33d657967ddc6d…

MALICIOUS

PDF

57.8 KB Created: 2020-08-14 05:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 420564dcdb328a6e17460d6ca59129f3 SHA-1: d57f746ba6982983a368f4e2af7ea22ea515a794 SHA-256: 9b33d657967ddc6d3fc83ed5c286b8f1ff2a046ca8ae6446ee2efab899bd6b91
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=why%20suffering%20ravi%20pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0437/7152/7325/files/xemitevejamoga.pdf'. The document body, though heavily obfuscated, contains the same lure text as the redirector URL, suggesting 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/wb?keyword=why%20suffering%20ravi%20pdf
    • http://tezosi.wbfi.org/uploads/1/3/0/7/130740596/fobaxofiredazi.pdf
    • http://files.cockrillms.com/uploads/1/3/0/7/130739891/8972705.pdf
    • http://files.milanchurchofchrist.org/uploads/1/3/1/4/131409909/9729002.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/xemitevejamoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5274/files/attributes_of_god_aw_pink.pdf
    • https://cdn.shopify.com/s/files/1/0433/2594/8072/files/viretitorijewami.pdf
    • https://cdn.shopify.com/s/files/1/0435/1167/7083/files/lananokufukoduduzukaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/zefegamejiwubozupaledex.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2038/files/ncoer_senior_rater_comments.pdf
    • https://cdn.shopify.com/s/files/1/0433/5874/8837/files/86399349301.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/rokixijoxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7279/8373/files/zativijib.pdf
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/birlemi_milletler_szlemesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/bocadillos_menu_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/59351353975.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8968/files/28629081507.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/problem_solving_skill.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/97003306839.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_off0000a3cd.bin
f4882fdfee1d959ce054499af21593ca54deabc8043e9fc7bf51879e3cb03172
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CD 5448 bytes
font_01_sfnt_off0000b663.bin
0082987054b96499676ecad9b2c1cfa8761ebb6a93f4afad917eb18ad0d1647a
pdf-font-stream PDF embedded font (sfnt) at offset 0xB663 10724 bytes