Malicious PDF — malware analysis report

Static analysis result for SHA-256 56fe26c3a214b540…

MALICIOUS

PDF

59.3 KB Created: 2020-08-08 15:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a068018c6c9ae530fda2bc702dcdbe6c SHA-1: 884d25143ede6200ab95ef345cdef0829752eb53 SHA-256: 56fe26c3a214b540a12e991dc32b299eb6ea13525c15a4a5d0e863398cca6655
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate this PDF is a malicious redirector and part of a link farm, designed to drive traffic to potentially harmful sites. The embedded URL https://ttraff.ru/wb?keyword=restriccion%20del%20crecimiento%20intrauterino%20pdf%202016 is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery.

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.ru/wb?keyword=restriccion%20del%20crecimiento%20intrauterino%20pdf%202016
    • http://files.artisanstasmania.com.au/uploads/1/3/1/3/131398555/busaw.pdf
    • http://revuvur.gilheanyresearchgroup.com/uploads/1/3/0/9/130969204/7283075.pdf
    • http://xopazute.lakelandcommunity.org/uploads/1/3/1/4/131437508/gafuxuket_fipisad_nisidaneb.pdf
    • http://files.ibiogen.eu/uploads/1/3/0/8/130874524/xalepa_pusazo_rumepipupe.pdf
    • http://files.gahperd.org/uploads/1/3/2/7/132710491/woluruwamufokejezixo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2696/4895/files/pin_diode_working.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/foxafamisizefavivuxujofaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/25140104002.pdf
    • https://cdn.shopify.com/s/files/1/0435/0646/6982/files/the_taste_of_ink.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/8051744188.pdf
    • https://cdn.shopify.com/s/files/1/0436/8911/5801/files/20128604243.pdf
    • https://cdn.shopify.com/s/files/1/0428/1729/0406/files/juguxemedidomukodewogozat.pdf
    • https://cdn.shopify.com/s/files/1/0434/7127/4146/files/98658453584.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15843942414.pdf
    • https://cdn.shopify.com/s/files/1/0430/9752/2329/files/92715433018.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000879a.bin
4a38aa60be9540f36d45510ee9598f2c5bfb38af761927384a1f94bda39708ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x879A 1988 bytes
font_01_sfnt_off000090b3.bin
3fe5fe6d5e9f39f72a23d4347173d2c0dfba1ffe94b700fc3a5041ef8dd426e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90B3 5672 bytes
font_02_sfnt_off0000a3e3.bin
ff7aa922e8e85e5697d3d4327ac7080ccdd8f8eea7f3a8d6a6bd45184b4a33a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3E3 14800 bytes
font_03_sfnt_off0000d179.bin
ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD179 4324 bytes

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