Malicious PDF — malware analysis report

Static analysis result for SHA-256 c068ad3370f844e6…

MALICIOUS

PDF

44.8 KB Created: 2020-08-15 22:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92e83197a1b2835f442a87d75cf9d50d SHA-1: 195aa69f519e8fcbcfc03989cd64610c4edbddb0 SHA-256: c068ad3370f844e6f48f7ab0f02d37683a9cf97037d589c5e3811a03b333e1c0
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'CBC test report format pdf' and includes the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection 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.cc/wb?keyword=cbc%20test%20report%20format%20pdf
    • http://files.localcraft.net/uploads/1/3/1/4/131410736/2378192.pdf
    • http://files.lolaobamehinti.com/uploads/1/3/1/3/131378780/2a63d58b98786.pdf
    • http://files.kenmoreta.org/uploads/1/3/1/3/131380730/gufekafof_dusabadujunole_kujixababijobog.pdf
    • https://cdn.shopify.com/s/files/1/0431/5620/9819/files/jives.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8541/files/mc_210_rv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/fulowozujilem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48787523288.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/xigigebogoferero.pdf
    • https://cdn.shopify.com/s/files/1/0431/6273/0645/files/buvepamibuvamakixukokoles.pdf
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/warapabagadipolubojawelaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/beginner_piano_christmas_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0831/files/panonidiwosi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/72879631850.pdf
    • https://cdn.shopify.com/s/files/1/0434/4404/3943/files/tipesenosepi.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_off000070b0.bin
4d66522be3092e445be3ebd09bf57723bc4a8237371f78a493cd0601c36ce6db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B0 5316 bytes
font_01_sfnt_off00008297.bin
59b08c6f27f509e7dbdfb315add27bd6342cbb6845230647e07a01d7f5822d91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8297 10580 bytes

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