Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3381f231f7e5a3…

MALICIOUS

PDF

88.5 KB Created: 2021-04-07 03:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc518f066af1948ae0d13063746bd0c3 SHA-1: 274a07fc52925e00db63378076c2a71833524bab SHA-256: 6b3381f231f7e5a31d6f3260004498a1f3c4746444ce79cf7dd3a10135cb386b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an external URI pointing to a suspicious domain, likely intended to deliver a malicious payload. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/123?utm_term=full+forms+of+computer+abbreviations+pdf
    • http://vedice.ru/82722788261dk886.pdf
    • https://cdn.sqhk.co/gedodupem/hcighhB/stick_war_legacy_apk.pdf
    • https://cdn.sqhk.co/fatidizeru/ajNhaLu/zidaxegezarubobatasexe.pdf
    • http://vutajazelige.medianewsonline.com/31499061605.pdf
    • https://cdn-cms.f-static.net/uploads/4411490/normal_601677c78773b.pdf
    • http://pycnidwzxc.info/57343033230ezr8y.pdf
    • http://gepanukotex.getenjoyment.net/4495641169.pdf
    • https://cdn.sqhk.co/bolomekurufe/0jbCBii/street_fighter_4_ce_apk_full_unlocked.pdf
    • https://cdn-cms.f-static.net/uploads/4485435/normal_600e83f55ef26.pdf
    • https://cdn.sqhk.co/somisafeg/eQgegcd/ketejikujediwiwopunitifu.pdf
    • https://static.s123-cdn-static.com/uploads/4459466/normal_5fde3ff022b1f.pdf
    • https://cdn.sqhk.co/letarezetap/gchdjaG/lolegafofapolad.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d3df31c7-72fe-42b1-a92e-0723e8ed7a16.filesusr.com/ugd/5bf82b_9e15cf2c437843ab95bde527ca384600.pdf?index=true
    • https://uploads.strikinglycdn.com/files/47e4b729-b182-4fc8-a31a-c1537f7e3238/reset_apple_time_capsule_without_losing_data.pdf
    • https://uploads.strikinglycdn.com/files/23861061-bfd3-495b-860e-a309731d424a/xowalojelisuma.pdf
    • https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_ed3f1620f2034415ba15415417d12f0d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/517f1a10-a3d4-4cea-8c29-c0c2f050c3a7/facebook_marketplace_uk_not_working.pdf
    • http://kapirexazi.onlinewebshop.net/odisha_map_hd_download.pdf
    • https://uploads.strikinglycdn.com/files/cc4d1c2c-0109-454e-b1e3-8163bf41cad9/91959764434.pdf
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_4f13f630c48a44b6a0bc0c40de6178ae.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ed2.bin
688f276c42d81d9bc45df68dc7e9f12f56b3d47c536e370ce43ff653cae53f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED2 2308 bytes
font_01_sfnt_off00011914.bin
b761d0e34bef6e693b9fd97e38f1d08fd2f0d7448462ffce0b9e08b0018cf3aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11914 5456 bytes
font_02_sfnt_off00012b90.bin
779e4d5d874077cdff0759d866e53649e1a52e6e70b577430d293cba469c23a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B90 11920 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.