Malicious PDF — malware analysis report

Static analysis result for SHA-256 af92465ca9d8da37…

MALICIOUS

PDF

74.2 KB Created: 2021-02-27 15:16:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 319509b0578f3a625208823449f6d388 SHA-1: 1697423b340794fb61e949b3c364ac87b3f8e666 SHA-256: af92465ca9d8da37fe90fb66e9a0707259c1c2035f97d745f4d25b9edb474b2a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://resalured.ru/wix?keyword=christopher+kokoras+insurance+agency+somerville+ma` suggests a phishing or scam attempt, leveraging seemingly legitimate keywords to entice users. While no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://resalured.ru/wix?keyword=christopher+kokoras+insurance+agency+somerville+ma
    • http://weareanonymous.org/ripesozunowmguf0.pdf
    • http://dafagaketa.sportsontheweb.net/motorola_hs850_bluetooth_headset_charger.pdf
    • https://cdn.sqhk.co/pavujakorige/jgia9ja/racechrono_gps_lap_timer.pdf
    • https://cdn.sqhk.co/taduzotul/tFBiaMY/39574230076.pdf
    • https://static.s123-cdn-static.com/uploads/4408319/normal_5ff96dada8554.pdf
    • http://rosutob.getenjoyment.net/niduso.pdf
    • http://rexevivejegox.scienceontheweb.net/11335728943.pdf
    • https://cdn.sqhk.co/zejizoguzut/jb9ja93/68624885990.pdf
    • https://cdn-cms.f-static.net/uploads/4383795/normal_6037a4b83329b.pdf
    • https://cdn-cms.f-static.net/uploads/4378623/normal_5fea0f691d5cc.pdf
    • http://fafesixokegigi.getenjoyment.net/sovexodevuvavujobume.pdf
    • http://copytoshka.ru/62690387623ot1ig.pdf
    • https://cdn.sqhk.co/nudofarus/Vc6Dfhb/the_equalizer_2_cast_nba_player.pdf
    • https://cdn.sqhk.co/bapisolel/Iuhhugh/jakajipaw.pdf
    • https://cdn.sqhk.co/lojibuwe/a8h1ENH/57273906402.pdf
    • https://cdn.sqhk.co/muluxodipoto/ibifj8V/pufojoxumapajaka.pdf
    • https://cdn.sqhk.co/raxasumo/chcgfQZ/gafikoraraporesajuw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d587.bin
64991708fc6c5c3fe38cf740bc8fefee683f5c219a2ac4a0a6febfff3b1d3cd4
pdf-font-stream PDF embedded font (sfnt) at offset 0xD587 5476 bytes
font_01_sfnt_off0000e809.bin
43a5b1b255e89f60159e96d62fb2e019bd0bf32bfa905e7e1e2921cb259f8321
pdf-font-stream PDF embedded font (sfnt) at offset 0xE809 10380 bytes
font_02_sfnt_off00010b71.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B71 4324 bytes