Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5bb88e326ffce0…

MALICIOUS

PDF

42.8 KB Created: 2020-08-30 02:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9154a7d5e340fcfb7d2058e084f4b57b SHA-1: 7911eb76b9a99c65693cb3accf6ce8e56f17d1b0 SHA-256: cc5bb88e326ffce0cd6616ffd102684ef74a5de76f975b34fbe7aeedbde61f30
120 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link that leads to a link farm of other PDF documents. The document body, though heavily obfuscated, contains the primary malicious URL. The heuristics indicate that this PDF is designed to redirect users to known malicious infrastructure, likely as part of a SEO poisoning or phishing campaign.

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=diagrama+de+pareto+de+segundo+nivel
    • https://static.usrfiles.com/ugd/a467d2_03389f0e61974aca8b90901730cc0d91.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5da69e4631440b58f7fcf8c8e94b7ee.pdf
    • https://static.usrfiles.com/ugd/b8c837_5b60b0c50f844d458b006f84c3d5d206.pdf
    • https://static.usrfiles.com/ugd/12745a_73f15e23b3e341afaac4c0e293bd9430.pdf
    • https://static.usrfiles.com/ugd/b8c837_13281f00f0d746fb824f14a438d82bfa.pdf
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/pakal.pdf
    • https://cdn.shopify.com/s/files/1/0436/2538/2051/files/zajalubivepakolefu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2797/1741/files/introduction_to_cardiopulmonary_exercise_testing.pdf
    • https://cdn.shopify.com/s/files/1/0435/1354/4863/files/campbell_biology_10th_edition_online.pdf
    • https://static.usrfiles.com/ugd/b8c837_48f77f2cf4a64f738f36d47e914ca929.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b1bb1c570854b08806cf4c45bc1f273.pdf
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/43469654433.pdf
    • https://cdn.shopify.com/s/files/1/0428/6539/3831/files/81027158984.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/fadejulatazobokokotime.pdf
    • https://cdn.shopify.com/s/files/1/0437/8558/4801/files/sda_xhosa_hymnal.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_off00006690.bin
8e379a131f8d73310b42d3e6333b28c0f3d547df09d6e4cd8b647746fbb016ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6690 5336 bytes
font_01_sfnt_off000078a8.bin
fd2a66f6890830badd3c01459468abbdc9c6a2a35784c2d484c3c233995b534d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A8 10968 bytes

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