Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63f2ea848000247…

MALICIOUS

PDF

77.3 KB Created: 2021-03-16 09:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f86e53f5e78f40ba39ee3a3b20eb7f3 SHA-1: 74251a73644c428c25165be3cc80a84b8e53f1e2 SHA-256: e63f2ea848000247de0658c34f17400fd6c3451380c1ffe87f89d52ee647c7b7
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The embedded URL and numerous other extracted URLs suggest a phishing or credential harvesting attempt, disguised as technical support information. No scripts were extracted, but the PDF structure itself likely facilitates the redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=hobart+commercial+dishwasher+tech+support
    • https://cdn.sqhk.co/rizitewav/zNjijfe/wotam.pdf
    • http://argo-tourism.com/skin_so_soft_original_bath_oil_usesxqd2l.pdf
    • http://sait-ok.ru/967056968571x3aj.pdf
    • http://iciko.xyz/wumotevizosemugapmt3.pdf
    • http://yourbigdick.space/samujutemavogemari18j72.pdf
    • http://kmikaerfs.ru/mimivizunapqndm.pdf
    • http://storeyou.store/91459945241e7dea.pdf
    • https://cdn.sqhk.co/rivotoxupow/cVojgTF/fopoxaxobokidokidi.pdf
    • http://blaugrana.ru/62783520291xcel5.pdf
    • https://cdn.sqhk.co/pujixefan/Ghchehi/avengers_game_xbox_beta_release_date.pdf
    • http://calipshatngaccs1.xyz/vazogulegolapiwoj0gc8g.pdf
    • http://appletopshop.ru/14250840827xsz22.pdf
    • http://shoppingyxplus.xyz/what_can_you_do_with_a_digital_media_arts_degreeic1sn.pdf
    • http://instasale.company/8902801861izpxq.pdf
    • http://medicinfo.online/bigaxisuq4fy4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_cda23fd6b69641109586d63972e468c9.pdf?index=true
    • https://de315c38-daa2-4293-b666-e554ba9b7d65.filesusr.com/ugd/564d2e_eeec9eb6ddd34a29820ced7f1167ad44.pdf?index=true
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_b055157d7b844541b5d5435e15466449.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed6c.bin
5ec746d5961f0d337c75c8ee050aa0a0e15924bea5b89caee147797a6fae313b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED6C 5504 bytes
font_01_sfnt_off00010006.bin
efcccf3e6796eaca2f97116c1d91f6ddea9b353cec020bdbfd9279bdb9c3b95a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10006 11312 bytes

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