Malicious PDF — malware analysis report

Static analysis result for SHA-256 d418cc73893e5a9c…

MALICIOUS

PDF

34.9 KB Created: 2020-08-30 22:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4490243f1f70daabbde568f6f71df18f SHA-1: 3f67b77d260df709b30ce1c3fcaca417f7ed4c01 SHA-256: d418cc73893e5a9c74109dba2d0612efe0c365a8e46e62ec2aa531b0b4fcb4d3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/wix?keyword=code+82+chevy+spark+2014', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lure users to a malicious site, likely for phishing or malware delivery.

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=code+82+chevy+spark+2014
    • https://static.usrfiles.com/ugd/b8c837_2a5aa4b91117444d966558782b815cbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7e4fed6a1414531bd4851100916ddb1.pdf
    • https://static.usrfiles.com/ugd/5be868_f865bec538d74054b0a825ff5bd7a037.pdf
    • https://static.usrfiles.com/ugd/850f07_a943d60cda0e49c2943ecf14afdfcdd1.pdf
    • https://static.usrfiles.com/ugd/345929_1529ef1c5e1b4768bd325ff7af1c3b49.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbcd355dca4b453e893ae47c2ec72677.pdf
    • https://static.usrfiles.com/ugd/b8c837_57da1a70ffb54bcdb5b94610ada5d0ce.pdf
    • https://static.usrfiles.com/ugd/1e32c2_57716bd0abae4bf399e7bf11e8195eae.pdf
    • https://static.usrfiles.com/ugd/c0b427_124c5e05b1334306926f87c5650ff9a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a7ab4fa13ef4a3381c92a1aa9ddd512.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/tuwezalexadusovibodutalix.pdf
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/fofulafudakomobalexufod.pdf
    • https://cdn.shopify.com/s/files/1/0434/1081/7180/files/beerappa_audio_songs.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6843/files/47886190705.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_off00004760.bin
4374086e67c9fb1a6200de99f8f7e649313286624028051551745d922aab467d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4760 5868 bytes
font_01_sfnt_off00005b69.bin
645710a57123a493650baa8472820fccb170c876562f3408bc6fd868f3cd986b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B69 9964 bytes

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