Malicious PDF — malware analysis report

Static analysis result for SHA-256 249427c99a0f0247…

MALICIOUS

PDF

60.0 KB Created: 2020-08-26 05:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a82da97ea8f926317f6af5c4f452fac0 SHA-1: 21f4a227862f3f258ec5286ae9ad39d8c96ad0f0 SHA-256: 249427c99a0f0247ee420eacadee6afd3a29f967d8ac9e28138cb644d2544254
150 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised as a free song download. This is further supported by heuristics indicating a malicious redirector and a link farm. The document body, though heavily obfuscated, contains the target URL and references to free downloads, reinforcing the social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=zingat+song+free+download+mp3
    • http://zokuzeri.brownanimalhospital.com/uploads/1/3/0/7/130739704/wodotuzina.pdf
    • http://files.colemancomics.com/uploads/1/3/0/8/130873908/486405f12560ca.pdf
    • http://kapolitig.mquinn.online/uploads/1/3/1/3/131383544/234f3.pdf
    • http://nulexuled.lostcityofcoloradosprings.com/uploads/1/3/0/8/130814674/xakikul.pdf
    • http://files.mvsterminerals.com/uploads/1/3/1/0/131070712/a23278fc4ca.pdf
    • https://cdn.shopify.com/s/files/1/0459/6593/4759/files/wuterulikolevodufaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/34267935295.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/35421071876.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/43373258190.pdf
    • https://cdn.shopify.com/s/files/1/0431/7442/8827/files/ronuzefivutof.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4932/files/zukovuverobes.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/nirugotijatenovufifeja.pdf
    • https://cdn.shopify.com/s/files/1/0434/9673/4880/files/67127753010.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58085676994.pdf
    • https://cdn.shopify.com/s/files/1/0430/6812/9441/files/energy_fluctuation_in_canonical_ensemble.pdf
    • https://cdn.shopify.com/s/files/1/0431/5935/5558/files/fipikinu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4485/files/17245255888.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/gettysburg_battlefield_guide_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/1399/5672/files/31454976549.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/smackdown_vs_raw_2007_game.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654d.bin
4d2015f3f9352ea54d2afec221ff75137216366ffe8c7398f8119a7c5815fd3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654D 5572 bytes
font_01_sfnt_off0000783c.bin
2f5d5ef090aed7e6bfb4d770cb25a4756beab0d5261108340d079e344457ec58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783C 5580 bytes
font_02_sfnt_off0000877f.bin
1fb0d2ddd9854ef2013acd9c627d3af2c8b04cc0a1c42a41ed98db783dabb8f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x877F 15780 bytes
font_03_sfnt_off0000b8ee.bin
e3eac7a7d6e996ecec441b7e6554304a93f43a10a38c0942f3ce1223f14ceff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8EE 16284 bytes
font_04_sfnt_off0000ced8.bin
08522fe631392e3c0f00f4b9e8bfd7fc69ea46757871e72bf0a7cc858a10d1f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCED8 5208 bytes

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