Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ece688c600e8b3…

MALICIOUS

PDF

94.3 KB Created: 2021-03-01 20:37:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 306e31113f163c01276c2cbddf8a3209 SHA-1: b3e4e554e29dd232731d65819969ae3eddbbbc5a SHA-256: 10ece688c600e8b376ba7348921d7e41531a558b6a98790c84be5da166520a29
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, one of which is `https://resalured.ru/wix?keyword=poe+3.8+summoner+guide`, suggesting a lure related to a game guide to entice users to visit a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution attempt.

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=poe+3.8+summoner+guide
    • http://devlp.club/how_much_psi_does_a_good_pressure_washer_have7r9tx.pdf
    • http://clipshd.design/10_000_reasons_chords_key_of_fjaxvn.pdf
    • https://cdn-cms.f-static.net/uploads/4450353/normal_601ec982a4f73.pdf
    • https://cdn.sqhk.co/bipozipo/eZkgj6i/42915802091.pdf
    • https://cdn.sqhk.co/jidevumedure/hbigQic/sisad.pdf
    • https://cdn-cms.f-static.net/uploads/4416935/normal_60121b77287e4.pdf
    • http://idealica-italiaufficiale.site/61790711978h3xwc.pdf
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/1fe88.pdf
    • https://zavowajasobi.weebly.com/uploads/1/3/1/4/131406950/feluluposopuk-nijebusisow-tegebirurafu-vuxivixumizud.pdf
    • http://fixmarker.fun/jedudgzt33.pdf
    • https://xumizobizuzu.weebly.com/uploads/1/3/4/6/134688834/6a237cd01f45ad.pdf
    • https://cdn.sqhk.co/misumirotoj/gijidii/my_little_baby_jaya_2017_sub_indo.pdf
    • https://cdn.sqhk.co/nobutowug/eSwghgi/nhl_21_be_a_pro_goalie.pdf
    • https://static.s123-cdn-static.com/uploads/4369917/normal_5fff519e337d5.pdf
    • http://boomerangoo.site/bob_revolution_flex_duallie_double_jogging_stroller3cmz2.pdf
    • https://cdn-cms.f-static.net/uploads/4411490/normal_5fe8b2092c66a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bepukuba/godutujefixem.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_off00013684.bin
47d31a1b78ebce1050497f55895f2a162cd9f81c694ad143e22afbd222f40a34
pdf-font-stream PDF embedded font (sfnt) at offset 0x13684 5296 bytes
font_01_sfnt_off00014878.bin
b86e4816ed45c48c10711f9978360ab6034582c5619f3ca249fa858f0595b2ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x14878 10412 bytes