Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc78561e23ab4f0f…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 13:06:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5280183d6acfa905cdfa9af4e08029c2 SHA-1: 2c8398fac294ecb165fcef225e67dbd45156423d SHA-256: bc78561e23ab4f0f9ce9886dad8aaffe782e318dc4ca38da08e795223f52bca0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Justin Bieber sorry dance video 3gp' and the redirector URL. This suggests a lure to a malicious site, potentially for phishing or malware delivery. The presence of multiple PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the ultimate 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.cc/pify?keyword=justin+bieber+sorry+dance+video+3gp
    • http://leripipo.bigbearvienna.com/uploads/1/3/1/1/131164250/malog_xowabususejob.pdf
    • http://files.stevenjcabral.com/uploads/1/3/1/4/131406841/7273523.pdf
    • http://latoxumiv.changeps.net/uploads/1/3/1/3/131380485/9357259.pdf
    • http://files.universityroadhouse.com/uploads/1/3/1/6/131637953/1576177.pdf
    • https://cdn.shopify.com/s/files/1/0435/2894/5815/files/98047640241.pdf
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/sanpete_county_booking.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/dowejuzesilovitu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/59571848995.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/50851747359.pdf
    • https://cdn.shopify.com/s/files/1/0431/3183/0421/files/cinderella_story_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/investment_portfolio_template_excel.pdf
    • https://cdn.shopify.com/s/files/1/0429/4246/4166/files/health_benefits_of_chia_seeds.pdf
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/67200053116.pdf
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/licensed_to_drive_full_movie.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_off00004e93.bin
cb995e38600886193fbe209a857077ee30f67d7abeb83a171a5ebc957fa9da17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E93 5664 bytes
font_01_sfnt_off000061e6.bin
ace45be9bc218da69baab7d0d31a7b25057ba42a7f2f377dd32e05644f8545fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E6 10612 bytes
font_02_sfnt_off00008682.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8682 16204 bytes

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