Malicious PDF — malware analysis report

Static analysis result for SHA-256 3554ae88181110e3…

MALICIOUS

PDF

38.4 KB Created: 2020-08-04 19:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93d25ea05b71e3e39902bff3c4a9765e SHA-1: dc21979852a5bd7677155906568bfd6564ca20ee SHA-256: 3554ae88181110e3754864b521f80fed9398aa8bffa493ba9b159f7821412b78
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, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure related to a book title, and the malicious URL is embedded within this context. The file also contains a mass of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination.

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.com/pify?keyword=al+arabiyyah+bayna+yadayk+book+1+pdf
    • http://files.rotolomusic.com/uploads/1/3/2/3/132302810/zumob.pdf
    • http://files.thelashladyutah.com/uploads/1/3/0/8/130814531/sijupedufomulamag.pdf
    • http://files.325986690869568534.com/uploads/1/3/1/3/131380158/gadivujifemavoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6769/4501/files/xikefulewuxuliv.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/jajolofakatibuzanonejad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83406059157.pdf
    • https://cdn.shopify.com/s/files/1/0437/7991/5934/files/55552678286.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/22727361750.pdf
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/vaxevuwupewoxujugofevixof.pdf
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/hodgdon_reloading_manual_2018.pdf
    • https://cdn.shopify.com/s/files/1/0439/6508/7902/files/82021354855.pdf
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/89919528202.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004984.bin
5b35248847b7ba2badb70a1c09f06c342f531497c7847638c11e5c1e7b9a32ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4984 4888 bytes
font_01_sfnt_off00005a0a.bin
90192358b6d99c7e2a30d7d59221dd0e774e215b5d81a156343429b412441d75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0A 10836 bytes
font_02_sfnt_off00007ecc.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECC 4324 bytes

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