Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7c9769fdd37c97…

MALICIOUS

PDF

45.8 KB Created: 2020-08-05 02:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 491facf95ef4efabb39faad42de33264 SHA-1: 0bfd2cb5026cc8c6c1a734e87af7785bc5dacc4b SHA-256: 9f7c9769fdd37c978d123e3df44a34eefbe12007e5de6968f70e8ce3ff102b18
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Bodmas questions for class 4 pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The heuristic firings confirm the presence of a malicious redirector link and a link farm, indicating 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/pify?keyword=bodmas+questions+for+class+4+pdf
    • http://files.anchoredstudents.com/uploads/1/3/2/6/132695280/wefiwojezuxanakef.pdf
    • http://files.omrocommunity.org/uploads/1/3/0/9/130969984/9320874.pdf
    • http://files.idstatement.org/uploads/1/3/0/7/130740517/a8e52386532d6.pdf
    • http://files.sportmshenservice.com/uploads/1/3/0/7/130738993/tevibaxabe_fagas_dimola_walomanego.pdf
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/57218061464.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4629/files/26321663457.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4600/files/69405668531.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/6010087901.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7975/files/blank_resume_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/10856246283.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/tukosodik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.pdf
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/2049955533.pdf
    • https://cdn.shopify.com/s/files/1/0433/7729/5516/files/fahrenheit_451_ray_bradbury.pdf
    • https://cdn.shopify.com/s/files/1/0431/5240/8742/files/17621123609.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_off00005f4d.bin
6bb2ebe4736105df0a07ee670057bf948b791da8e51774b9a098e89a74366a05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4D 5564 bytes
font_01_sfnt_off00007226.bin
f9648f5c834d2123ace616faf64cc91bd0305027d46338607dc45f141c256b3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7226 10276 bytes
font_02_sfnt_off00009583.bin
3c1c7bd747a9a8f6e1c531457064e9378d9a893e5271ac7381d9d0015290d8f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9583 16088 bytes

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