Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ffc212c3016dc65…

MALICIOUS

PDF

40.3 KB Created: 2020-09-07 19:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88b324a01b498ef867a2dca4237fefed SHA-1: fc167d02adea14eb79adfc1925b3077d95ce9e78 SHA-256: 1ffc212c3016dc6598ea5d3573ab0e9d7797875fdc3b6b27fb94714c793f623e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a deceptive title related to purchasing an Android TV, which is likely a lure to encourage users to click on embedded links. One critical heuristic identified a PDF link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the malicious URL and a list of other URLs, some of which are benign. 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.link/wix?keyword=que+android+tv+comprar
    • https://static.usrfiles.com/ugd/d8e941_a51762d44e9842b48e018bc4240be167.pdf
    • https://static.usrfiles.com/ugd/94e5ef_6e4f29e63b354f7aae33f34f9691e21a.pdf
    • https://static.usrfiles.com/ugd/704566_112bd8e760bc4ae5ad6219dffdc49b53.pdf
    • https://static.usrfiles.com/ugd/9ced5d_45fd1877e1444d619b907b2cde13b8ce.pdf
    • https://static.usrfiles.com/ugd/868401_e6c3c78f8a9e4bb4921ed739d5d77438.pdf
    • https://static.usrfiles.com/ugd/b8c837_25286c4c53824c33bd323f6e63ff0e53.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/psychological_trauma_theory_research_practice_and_policy.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/ganumotawami.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/texto_expositivo_divulgativo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/ifa_paris_full_form.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_off00006047.bin
c75802c9d0dad16ceecdc121d247ea8726a6abd6baaa53a3cdb36bac3a1cc269		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6047 5128 bytes
font_01_sfnt_off000071ad.bin
dd4d24dc1faa611e48fc894a7bbfee963965926b190acb2dc0a8f2d13f4a923a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AD 10376 bytes

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