Malicious PDF — malware analysis report

Static analysis result for SHA-256 59d3d33dca2cfca4…

MALICIOUS

PDF

42.3 KB Created: 2020-08-17 13:10:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6075a6442db0296ae8dd66d1333e7602 SHA-1: 0006df8eff6d7af121e452084fd29f1fadc56bb9 SHA-256: 59d3d33dca2cfca4da70c639eb4dea2a3ce9efd476d5d7fd001fde71ce88e2e8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=blaupunkt+btw01+manual'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting an attempt to obscure the malicious redirector or to appear as a legitimate link farm. The document body, though heavily obfuscated, contains references to 'Blaupunkt btw01 manual' and the authoring application 'wkhtmltopdf', indicating a lure to disguise the malicious intent.

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=blaupunkt+btw01+manual
    • http://duven.downeyrideandstride.com/uploads/1/3/2/6/132696030/247a4505.pdf
    • http://files.williambartlettfineart.com/uploads/1/3/1/3/131379040/puvuwadoguti_xevakofej.pdf
    • http://files.sodcdances.com/uploads/1/3/1/0/131070827/nulopiluku.pdf
    • http://files.wfmceramics.com/uploads/1/3/0/7/130739371/f734555.pdf
    • https://cdn.shopify.com/s/files/1/0444/4015/8374/files/regression_analysis_example_problems_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/25989736005.pdf
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/elementary_numerical_analysis_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/roduvexulofuwomejo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/789868512.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/mukutobizojame.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/75621406665.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/fefilolisavizuwogaxaba.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_off00005bd2.bin
2a52ae5d8b53a9c21562094dc687d7c7c37350cb1c28548440fe0abf16a30e9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD2 4836 bytes
font_01_sfnt_off00006c38.bin
98ea0b3c3cb7e05abb9c750a101fe194be6209ad406dfc0fe914d16175ca4161		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C38 10180 bytes
font_02_sfnt_off00008ee8.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE8 4324 bytes

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