Malicious PDF — malware analysis report

Static analysis result for SHA-256 3866f51e6281e0b7…

MALICIOUS

PDF

70.1 KB Created: 2020-09-10 18:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d89ac0d9a8565bd0c311b89c27a5c2b SHA-1: a3f74d4bac51feea1d60c7ba8773d072872e3b94 SHA-256: 3866f51e6281e0b7d6e6f1e2e60af06dc9175f2b7d0a57d61d17297d67659c5b
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Rti maharashtra application form pdf' and includes the malicious URL, suggesting a lure for phishing or malware delivery. The presence of numerous links to external PDFs hosted on domains like static.usrfiles.com and other suspicious domains further supports the malicious intent.

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.club/wix?keyword=rti+maharashtra+application+form+pdf
    • http://files.amazingdownunder.com/uploads/1/3/2/7/132712206/bezulozobufij.pdf
    • http://kikid.hia460eportfoliolizwilson.com/uploads/1/3/2/7/132710712/5531273.pdf
    • http://gonez.fibrosisinstitute.com/uploads/1/3/2/6/132681579/5340624.pdf
    • http://files.theinsurancecorners.com/uploads/1/3/2/6/132696113/pijubugew-konow-maruwizanewiru.pdf
    • https://static.usrfiles.com/ugd/2b98a3_3089cb6a66954823a51db1d037cde945.pdf
    • https://static.usrfiles.com/ugd/590778_1352dff7904c4fa7812a907ff264e141.pdf
    • https://static.usrfiles.com/ugd/26938b_e0ef6dbff0c149faa1fdd8db910a80e4.pdf
    • https://static.usrfiles.com/ugd/800b88_0475b1dce7554244b6a0a860cf9714a6.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_f80d76cdb7804b52ae6b76cf965977a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_d746cacea8cd4c9a86ccd86b9cf76171.pdf
    • https://static.usrfiles.com/ugd/a421e3_88703ddff3aa4af88e84b3ce115c41ce.pdf
    • https://static.usrfiles.com/ugd/1cc777_b022409fd7d0472db94935b8a46f143a.pdf
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/gaxakodulawekalelinoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/37197942847.pdf
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/dajizonikevake.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_off0000ab3c.bin
20925f999dcddf7f545d1d48749f9c82c747a9b4165c0a362821757f13a78680		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB3C 5072 bytes
font_01_sfnt_off0000bc40.bin
14ae5ac24d4cac83a3d12ffc13c18f03bad28bee30402303a9abddcb5766bd98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC40 14860 bytes
font_02_sfnt_off0000e9e5.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E5 4324 bytes
font_03_sfnt_off0000f7e4.bin
e3a1ff62a46c446b0d13b305e905ddcc346d952ea8262dd0f7bad9658d49a467		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E4 5176 bytes

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