Malicious PDF — malware analysis report

Static analysis result for SHA-256 8599a9676d109868…

MALICIOUS

PDF

39.8 KB Created: 2020-08-04 23:22:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a45a057942b4ecad760cc681a677ce4e SHA-1: 4d81f12f8acbe76fe057a6f848adb94adfc4b054 SHA-256: 8599a9676d109868f3ef3aa243fbfc806409963bb5078b5675a8da8c9adcd0a1
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for 'love to worship you chords pdf', directing users to the malicious URL. The file also contains a large number of embedded URLs, many pointing to Shopify, suggesting a link farm for SEO poisoning or traffic generation. No scripts were extracted from this sample.

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=love+to+worship+you+chords+pdf
    • http://lojavedu.chadwickandigor.com/uploads/1/3/1/1/131163635/9683875.pdf
    • http://files.chirpytravels.com/uploads/1/3/2/3/132303013/ruwizukubisu_wezakafeki_nenizaxatopin_wumelamixebab.pdf
    • http://files.afterhoursbandus.com/uploads/1/3/2/6/132681749/sabuxevejunemabuzoga.pdf
    • http://files.rebeccaevansam.com/uploads/1/3/1/3/131380177/6078182.pdf
    • http://files.osweetnature.com/uploads/1/3/1/4/131438510/005012836fa34.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sotuxinonuwirumedubisaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9475/files/lidimugal.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/letobugivojofifegadijap.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/67146593760.pdf
    • https://cdn.shopify.com/s/files/1/0435/5106/4228/files/54273916129.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/28739731566.pdf
    • https://cdn.shopify.com/s/files/1/0440/7784/2597/files/jadubiberobunitugepilowi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5803/6889/files/fetajatipanavabigu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/understanding_digital_signal_processing.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/best_choir_vst.pdf
    • https://cdn.shopify.com/s/files/1/0434/2782/3778/files/kerojegoloverigul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizazuvolabemonixodokij.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_off00004adb.bin
aea06b758fc2439a31d7d21e6ec6c68fb22b6b521c5aa617f05c95a05c560153
pdf-font-stream PDF embedded font (sfnt) at offset 0x4ADB 4972 bytes
font_01_sfnt_off00005c07.bin
cad4e4df06b11a7fdfc3e876aedb81122e51c303faf252ac91aff409afad779b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C07 12232 bytes
font_02_sfnt_off00008273.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8273 4324 bytes