Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c6aee091a14fc1…

MALICIOUS

PDF

35.7 KB Created: 2020-08-14 09:32:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cec4caa33e28d1a50bc9c18cdd5934f SHA-1: 2b3e9d39b2c354b86fcba3ff754b06a73304a661 SHA-256: b0c6aee091a14fc15711aa0970c98138fdc86c30e5fbc3833b1976284e595e5d
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service. The document body, though partially corrupted, suggests a lure related to a 'Bloomington 7 day weather report'. The primary malicious URL identified is https://ttraff.cc/pify?keyword=bloomington+7+day+weather+report, which is flagged as a malicious redirector. The presence of numerous external PDF links, including those hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.cc/pify?keyword=bloomington+7+day+weather+report
    • http://files.miltonfame.org/uploads/1/3/0/7/130776158/459659145bb449d.pdf
    • http://files.shopvintagedallas.com/uploads/1/3/0/7/130738725/lakek_solavadamuto_gumupejasiwiso_baleloveduvejum.pdf
    • http://files.sosweetcustomworks.com/uploads/1/3/0/7/130740141/zexelofem.pdf
    • https://cdn.shopify.com/s/files/1/0433/8522/5372/files/cooperation_and_implicature_in_pragmatics.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2667/files/22336546085.pdf
    • https://cdn.shopify.com/s/files/1/0434/4954/8966/files/15710670408.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0342/files/amadeus_travelclick.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/soxovafuriperituxowidibod.pdf
    • https://cdn.shopify.com/s/files/1/0439/4047/9144/files/82779747417.pdf
    • https://cdn.shopify.com/s/files/1/0432/6490/1284/files/fupitobajerijowim.pdf
    • https://cdn.shopify.com/s/files/1/0432/5287/5424/files/bronchiolitis_obliterans.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/vinupido.pdf
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/45995680029.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_off00004ebb.bin
f44cd830f25a531d08005d1fd2673c8897ca21eaeb53b23bdca638b1610ab198		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBB 5516 bytes
font_01_sfnt_off0000616b.bin
f9744fa66f4c6a8833e615a6d9443ae84f08dd02f388be5753f0a15de84cfad7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x616B 9620 bytes

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