Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc59d598e328355…

MALICIOUS

PDF

48.2 KB Created: 2020-08-30 22:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f31957388f20cb33671e6b8d8d29c90 SHA-1: 2fe1855c180409b4cd895190ff0546a310383f16 SHA-256: ffc59d598e3283553c4b52437d8fcfb9e31fd27b553fb711de243eeb398c896c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'water heater manual' and the malicious URL, suggesting a social engineering lure. The presence of a link farm heuristic further indicates an attempt 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/wix?keyword=bradford+white+water+heater+manual+online
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/fiximuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/6412/3814/files/72120668679.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56317886700.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/95799716171.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/stranglethorn_fever_vanilla.pdf
    • https://static.usrfiles.com/ugd/516793_8ebebd753b2e4445b218bdc676a305ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ea82feab48846e2affe08e1fd49485a.pdf
    • https://static.usrfiles.com/ugd/07ef24_c82a0167aff74aafbcddd619206ed474.pdf
    • https://static.usrfiles.com/ugd/e4ff69_6615a6c3ae314c73b343cbf0425d3ef8.pdf
    • https://static.usrfiles.com/ugd/b8c837_8fbd7408486747099e70b2d12ebee26c.pdf
    • https://static.usrfiles.com/ugd/e4a001_1f22849402a948d287bf02319da5be11.pdf
    • https://static.usrfiles.com/ugd/a48928_2785f2cb451f4fe3ae7f46f417887085.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_off00007be1.bin
f204bcaafec20ad874ae7efec948dccf7f215a36ef5aa25134282bff980f8e25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE1 5112 bytes
font_01_sfnt_off00008d2e.bin
63b2ab2e7dbfad7d91e87cc220403d8758e12840b9529cb2cfbf4a16514f35da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2E 11268 bytes

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