Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0a3909ba30d18a…

MALICIOUS

PDF

58.8 KB Created: 2020-08-22 13:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a75a57c1f7ef61e94bd30706b7e4aaa5 SHA-1: b86ce4b6fbf31765aa4606d2f50c102444c45c8a SHA-256: 8b0a3909ba30d18a2f80f31e095dea5afd9cb6b75dda649512142ac484d7be1a
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a link farm. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector heuristic. The presence of numerous external PDF links suggests an attempt to distribute further malicious content or engage in SEO poisoning.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=reponse+castor+informatique+2016
    • http://maxeka.bcartglass.com/uploads/1/3/0/9/130969690/9f757be8a8.pdf
    • http://files.praktische-philosophie.org/uploads/1/3/0/7/130776067/d535c894f57a8.pdf
    • http://files.imandycole.com/uploads/1/3/0/7/130775685/zemekafudimoruri.pdf
    • http://files.malcolmcounseling.com/uploads/1/3/2/6/132696210/14969b7d3553.pdf
    • http://files.shaktiiasacademy.com/uploads/1/3/2/7/132740580/mopikobobubux.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5548/files/wivifidokokutobitogebe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/tatewerurora.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0111/files/sotov.pdf
    • https://cdn.shopify.com/s/files/1/0465/1158/7478/files/whatsapp_status_malayalam_romantic.pdf
    • https://cdn.shopify.com/s/files/1/0452/1410/5760/files/80260228965.pdf
    • https://cdn.shopify.com/s/files/1/0429/3532/0735/files/grade_12_mathematical_literacy_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/xabiwijokujegif.pdf
    • https://cdn.shopify.com/s/files/1/0433/4108/6888/files/jufulasegefamol.pdf
    • https://cdn.shopify.com/s/files/1/0437/3646/5559/files/performance_appraisal_research_paper.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9146/files/xesudinatetofawufinuxanef.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/68983796858.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/30282857092.pdf
    • https://cdn.shopify.com/s/files/1/0432/7230/6846/files/teri_aankhon_ka_kajal_song_wapking.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_off0000a62b.bin
5d8e08a85d96268d922848794f47cb795d0225c142edaaca01aa92591831adf8
pdf-font-stream PDF embedded font (sfnt) at offset 0xA62B 5744 bytes
font_01_sfnt_off0000b9aa.bin
0c73e3daef5f2ed5287f18bc09a81c5fafcb61b8b1298191e1d6b010243ba37e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9AA 11312 bytes