Malicious PDF — malware analysis report

Static analysis result for SHA-256 a060c7ded9328f20…

MALICIOUS

PDF

39.9 KB Created: 2020-08-21 23:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 953d9153f081f1a0ae59655cf7ddb4d2 SHA-1: f6e118da9af2f84a0a611f1e06ae3d7a989ce1e1 SHA-256: a060c7ded9328f2063288473bfa4b21cc7e4945ed0ad54b880b23ad1c3051126
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=wireless+router+configuration+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, the PDF was flagged for containing a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute content through numerous benign-looking links, with the primary malicious link being the most concerning. No scripts were extracted from this sample.

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=wireless+router+configuration+pdf
    • http://files.alphaobsession.com/uploads/1/3/1/3/131380583/toriwovi-zuxobala-vigogipowagopez.pdf
    • http://files.spjcanalfulton.com/uploads/1/3/0/7/130776346/82b72d704d2a2f2.pdf
    • http://files.klintericson.com/uploads/1/3/1/8/131856105/3292052.pdf
    • http://files.architectureindetail.com/uploads/1/3/1/3/131380995/ronefuk_dotobut.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/chac_mool_julio_cortazar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9704/7718/files/85539236811.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/17187998884.pdf
    • https://cdn.shopify.com/s/files/1/0428/0346/2303/files/7114845907.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/37692147328.pdf
    • https://cdn.shopify.com/s/files/1/0448/9543/6955/files/capitalism_alone_milanovic.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/cause_and_effect_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0430/7301/1865/files/example_of_bibliographic_essay.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/mejatupetaxu.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_off00005e33.bin
1f7f42edc2629cf5e4bacfeebfb1b85cc153feb2c807e1c39afd47166fcec66e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E33 5336 bytes
font_01_sfnt_off00007079.bin
f3175c75a83d4846b2e85e70a16dda7e39baeefb99dc0bdfece814bd7ed46827		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7079 10080 bytes

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