Malicious PDF — malware analysis report

Static analysis result for SHA-256 b824cca7b6c41a41…

MALICIOUS

PDF

40.9 KB Created: 2020-07-31 20:22:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5987c5a70ed53da65a4051c664f6c99f SHA-1: b923cd10f63be08c51439e37335adeff75f7f960 SHA-256: b824cca7b6c41a41eea151a70503413bb1b093390ed111c9275ad0e6c36abd2d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the URL and appears to be a lure for a Maryland driver's manual. The file also exhibits a PDF link farm heuristic, indicating it contains numerous external links, with the primary one being to a Shopify domain. 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.com/pify?keyword=maryland+manual+del+conductor
    • http://files.campbellcounseling.org/uploads/1/3/0/8/130813906/lipiv.pdf
    • http://files.austinsbestphotobooths.com/uploads/1/3/0/8/130873708/nulawi.pdf
    • http://files.inspiralpathways.com/uploads/1/3/0/9/130969708/manukasuda.pdf
    • http://files.thegatheringplacestudioandshop.com/uploads/1/3/1/0/131070851/4122730.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/gisiladowefodejagejawiben.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9496/files/sakelulotiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74251218784.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/nedifuxedebewikasibuwolex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/22725835568.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/gepipuzisiwajekesomafef.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/96636464096.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/17826749349.pdf
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/43624437294.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_off000061e7.bin
33f7b24594b1161223caf6ae2ec51080b5caf590c783241465be4cc83717d77a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E7 5012 bytes
font_01_sfnt_off000072ee.bin
2e0c2dd0043a94c99f239cebe53f114f954d27903ee8f4b23e3051b096f94754		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72EE 10624 bytes

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