Malicious PDF — malware analysis report

Static analysis result for SHA-256 390e775163faaec3…

MALICIOUS

PDF

42.2 KB Created: 2020-08-16 23:31:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbd057c43bb4a917e4e879102cb6fef2 SHA-1: 4f7ec9c4bcbf29ac710e52af867d30fdff3c0a17 SHA-256: 390e775163faaec33da7c2fd55f7c5dbf25612fb31ea2f75e8574872caea454d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, a common technique for SEO poisoning or distributing malicious content. One of these links points to a known malicious redirector, ttraff.com, which likely serves as a gateway to a phishing or malware distribution site. The presence of a 'Visible LOLBin command execution instruction' heuristic further suggests that the document may attempt to execute commands or scripts upon interaction, although no specific script content was extracted. The document body itself is heavily obfuscated and contains the redirector URL.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=adjectives+prepositions+list+pdf
    • http://mosid.highyellowcurlz.com/uploads/1/3/1/3/131380005/gafamixogoxolekifor.pdf
    • http://files.hoopandjoy.co.uk/uploads/1/3/1/3/131397973/lixulakab_nesadodebexored_gavetasava_siguzan.pdf
    • http://wafutata.dirtbagshop.com/uploads/1/3/1/1/131163930/275068.pdf
    • http://files.beckyalley.net/uploads/1/3/1/0/131070625/kubifugelu_jivivovo_kamifobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/zaxopopigaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/3516/4835/files/adobe_membership_cancel.pdf
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/lodovaxudowaluvivivovij.pdf
    • https://cdn.shopify.com/s/files/1/0439/4971/9720/files/the_case_for_christ_lee_strobel_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/arquitectura_renacentista_espaola.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/65424485204.pdf
    • https://cdn.shopify.com/s/files/1/0441/1791/7848/files/senna_senokot_davis.pdf
    • https://cdn.shopify.com/s/files/1/0431/6204/2532/files/guvogozopisun.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9588/files/lefegijebagufewusobotu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/florida_new_hire_reporting_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/17797859449.pdf
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/o_level_biology_notes_uganda.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/pixeginuxoxobodapodowaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/design_patterns_in_java_with_realtime_examples.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_off0000681f.bin
42d91ea2dfb2d41d4220aa9b73696e041546a648f4118f518cfb6cdf070dc11b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x681F 5064 bytes
font_01_sfnt_off00007973.bin
77b95a15863e89437a4bd4f641f35597d56192bb6cc588f91fb596182a5e3f93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7973 9956 bytes

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