Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cdadb3bb1e58c06…

MALICIOUS

PDF

47.5 KB Created: 2020-08-22 09:20:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f67e841ef31b868c44ee852274ee5e1 SHA-1: 7ab859320083790b929cbc10e5d1cfabe294bd9c SHA-256: 4cdadb3bb1e58c06dc52dd17c4f8abbcf303e179c5112f3dd3f61eb335520bda
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'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and references to other PDF files, suggesting a lure to external content. The primary intent appears to be redirecting the user to a malicious site via the 'ttraff.com' URL.

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=instagram+outline+template
    • http://refof.kamahelewineco.com/uploads/1/3/1/8/131857334/zevodexur.pdf
    • http://files.arthurleewilliamsii736.com/uploads/1/3/0/7/130775979/tusisezive-kenebab-vodofemukonizin-bisixubuxosix.pdf
    • http://files.ableequips.com/uploads/1/3/1/3/131383949/8788427.pdf
    • http://files.papayasplace.com/uploads/1/3/0/7/130775071/karejipejatexi_pigepuvuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/7768/7706/files/anydesk_free_for_windows_8._1.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/96599547294.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/vozasugamirelu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/tofitunetaruvej.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/pejafefepinetajufage.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/tixogigetaxufubef.pdf
    • https://cdn.shopify.com/s/files/1/0434/9231/1206/files/zomomalugikasukenifezam.pdf
    • https://cdn.shopify.com/s/files/1/0432/6627/7531/files/93895093549.pdf
    • https://cdn.shopify.com/s/files/1/0450/4194/2678/files/what_do_horses_eat_minecraft.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_off00007d30.bin
eaab17943b3effa0d37e535939d969d7de74f0ffcb1fbf509677c8af639088cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D30 5076 bytes
font_01_sfnt_off00008e54.bin
23cc1a16023209996cba9c4c73112980461090e230eb231ecdec289c213c0da0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E54 10292 bytes

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