Malicious PDF — malware analysis report

Static analysis result for SHA-256 2673f9ef108fe2ac…

MALICIOUS

PDF

80.7 KB Created: 2021-03-23 19:29:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c847e08712009722afc8c1aaab91738 SHA-1: cf516af7446334fd03e98e7e23bb569167815756 SHA-256: 2673f9ef108fe2ac9eb32a84348b0a973bdd36eb50a749d6346a180bde8d559e
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 critical detection score. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, suggests a lure related to coding or technical topics to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/wix?keyword=how+to+use+notepad+to+code+javascript
    • http://psychologyrelax.xyz/what_is_the_role_of_indigenous_knowledge_in_the_development_of_our_science_and_technologyxs0hk.pdf
    • http://formverifiedbadge.com/kopikaribedefabulojelidiq5rta.pdf
    • http://jarizodej.22web.org/bidepopuzof.pdf
    • http://brumbum2.xyz/agrahara_claim_form_for_pensionersavyzw.pdf
    • https://vogoniboka.weebly.com/uploads/1/3/1/0/131070279/f468e.pdf
    • http://gesavirosun.iblogger.org/87802413875.pdf
    • http://axecheat5.xyz/xaviera_hollander_now3q8ex.pdf
    • https://jajozopikikaju.weebly.com/uploads/1/3/4/3/134359408/438a6a9c64c3d3.pdf
    • http://ita-yog.space/antivirus_best_androidwvq27.pdf
    • http://firstflirts.site/lizigoxadixubefz6.pdf
    • http://umkatrade.ru/dusekivinujuu8s0w.pdf
    • http://xefatoge.iblogger.org/90584999645.pdf
    • http://ridunculus.com/jululizulv93ps.pdf
    • https://vefigemeg.weebly.com/uploads/1/3/4/3/134368147/kijorepiv_xunoz_jamam_jemurifosiw.pdf
    • https://jitebogegamoma.weebly.com/uploads/1/3/4/7/134761197/3890057.pdf
    • https://zedurobarudavur.weebly.com/uploads/1/3/4/0/134018347/ritixenozeb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sifepilojiba.rf.gd/renal_artery_stenosis_guideline.pdf
    • https://uploads.strikinglycdn.com/files/38a7bfb1-1e5f-4542-b2f3-9820bcfd35cc/garelelunafabobumeko.pdf
    • http://robeguf.epizy.com/asoka_movies_video_song.pdf
    • http://lajefuvubesij.epizy.com/kexikozutonoketojaku.pdf
    • http://dowirimidezifa.rf.gd/56246088579.pdf
    • https://uploads.strikinglycdn.com/files/db0b7d88-487c-4628-b69f-a70705d8674e/25964601268.pdf
    • http://bumitorazefi.epizy.com/49731870317.pdf
    • https://uploads.strikinglycdn.com/files/30f00ab5-be71-46e4-bdc8-5f6b3f2e1d5f/tcp_ip_osi_layer_comparison.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd6d.bin
b3bb9f00366d7b766aee3ce57e8cc20bd18baa9f4efb500879fdff311f054695
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD6D 5224 bytes
font_01_sfnt_off00010f5a.bin
88030886e23dd4265756d4d7baf0da86ed1920e24afb32ff62b62772dc58c538
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5A 11044 bytes