Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b40377219ed5fe4…

MALICIOUS

PDF

58.5 KB Created: 2020-08-08 01:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 367d252da35dd559017c2142bf56a40f SHA-1: 3c69afa7443754555b9b5483f284dc4c6abe2396 SHA-256: 3b40377219ed5fe4ca73b6c2ef22f5cabc76111ca27f783b9e6f43728f5a02e5
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=canon+eos+rebel+t7i+manual+pdf. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The document body, though heavily obfuscated, contains the primary malicious URL and several benign-looking PDF links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=canon+eos+rebel+t7i+manual+pdf
    • http://files.tpsnz.co.nz/uploads/1/3/2/6/132682110/jawutolubilowofe.pdf
    • http://files.roundupmontana.net/uploads/1/3/0/8/130874691/38303aafd.pdf
    • http://files.rewoca.org/uploads/1/3/0/9/130969594/537429772e.pdf
    • http://pimazimig.catskillcougars.org/uploads/1/3/1/4/131406082/b571d3bf.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4121/files/juzurunaforujonepu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/stupor_and_coma.pdf
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/fur_elise_piano_sheet_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/gene_therapy_for_inherited_disorders.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40948382406.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/mating_interval_multiplier.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/vorananewi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2892/3046/files/sitexuvegaxodasifupel.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/pejumixukibita.pdf
    • https://cdn.shopify.com/s/files/1/0437/4324/8533/files/luvavoru.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/57568594629.pdf
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/wejikufigapetomubawuwux.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fc7.bin
6e65b841be4d236c4e254a88e1d19e1fd97060f398431ea3a106cb0e3754ce50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC7 5312 bytes
font_01_sfnt_off000081b2.bin
538512be6c526ea957b587fa229624d829dca4873b622d187784a60d2c877fcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81B2 6640 bytes
font_02_sfnt_off00009350.bin
1e0d01482e88a4b382a535b9c3dd34a5d1638e8a223db0673481b52866b5bb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9350 16220 bytes
font_03_sfnt_off0000c52b.bin
cc86994599ca2b6bade3ef2a24080e5ca7d0105f80c2e61a4a6d43fb5994c661		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC52B 16684 bytes

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