Malicious PDF — malware analysis report

Static analysis result for SHA-256 b412514e171d2265…

MALICIOUS

PDF

42.1 KB Created: 2020-08-08 08:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5abfdfee2f7ca07c063d2fc898c908a2 SHA-1: 5867babd799246dd61166d87e835a3d9a0a49e5e SHA-256: b412514e171d226564b0da1e35cb89476ce700bbc132b86e1b6a7141573b19b5
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=balance+score+card+notes+pdf`. This suggests the document is designed to lure the user into clicking malicious links, likely for further exploitation or phishing. 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.cc/pify?keyword=balance+score+card+notes+pdf
    • http://files.kamafittv.com/uploads/1/3/1/4/131482819/f523388c2e.pdf
    • http://files.nhplanetarium.com/uploads/1/3/0/7/130776120/4499418.pdf
    • http://tatusop.thecarolinacanineranch.com/uploads/1/3/1/4/131483281/netuf-jijapikofep-vipefijulegit.pdf
    • http://files.briannedempsey.ca/uploads/1/3/1/3/131380485/1212540.pdf
    • http://files.cycledoctoralfactec.com/uploads/1/3/0/7/130776518/0e4d07ff5d5d.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.pdf
    • https://cdn.shopify.com/s/files/1/0435/8445/4817/files/biruk.pdf
    • https://cdn.shopify.com/s/files/1/0431/9979/1268/files/japanese_mythological_creatures.pdf
    • https://cdn.shopify.com/s/files/1/0434/0177/3212/files/baldor_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/53280131993.pdf
    • https://cdn.shopify.com/s/files/1/0431/8045/8144/files/42040329687.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3749/files/59470406867.pdf
    • https://cdn.shopify.com/s/files/1/0434/9827/4978/files/30927711522.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/repoki.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/51563675842.pdf
    • https://cdn.shopify.com/s/files/1/0431/8461/9680/files/pofudalevo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/raluxekoge.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/jarixupudanenokevinil.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_off000066bc.bin
8c0eef134ad2cbce2faae15c0d6c1cc766d1c31ddf34e46cec2096be190dd7d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BC 5200 bytes
font_01_sfnt_off00007874.bin
aec252bfe68c2c32698720ef0a052f43c8888f37e1c8e26b6f77ca2e4c6ae395		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7874 10304 bytes

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