Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e31e1ddab6ea94a…

MALICIOUS

PDF

67.9 KB Created: 2021-03-14 21:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 464f29eccc991c02685472a58ebe1801 SHA-1: 82810ab7f2b29d5b54c1f12dd0d11e60c1ef52c8 SHA-256: 6e31e1ddab6ea94abbf6b1cc1e71da0ddd13a83b4dfa5d373e74607d9f03d37f
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an external URI pointing to 'golowaki.ru', which is likely used to deliver a malicious payload or redirect to a phishing site. The presence of embedded URLs and the overall detection suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/wix?keyword=denotation+and+connotation+2+answer+key+usatestprep
    • http://bandalet.club/suzuki_quadrunner_250_4x4_years_maded9tme.pdf
    • https://moviwinexanasi.weebly.com/uploads/1/3/4/3/134314602/boloxibo_vifavove_pifasiza.pdf
    • https://nalafefig.weebly.com/uploads/1/3/1/3/131379301/dazipiramegim_timivara_zujekodofubopiv_videbufufuxuwan.pdf
    • http://ndfnasg.xyz/hollywood_actor_bruce_lee_movieez5fp.pdf
    • https://getawupib.weebly.com/uploads/1/3/1/8/131856556/1932313.pdf
    • http://orehi-siberian-force.online/present_continuous_tense_exercises_for_6th_grade5h2wy.pdf
    • https://keminugugenoxag.weebly.com/uploads/1/3/4/3/134321568/8901968.pdf
    • http://nuvifufaronez.22web.org/13993339114.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bopexetosezulav.rf.gd/intake_and_output_measurement_sheets.pdf
    • https://uploads.strikinglycdn.com/files/9df5df6c-d1f1-4482-a368-3aed133a5d0b/roziritekosedorixis.pdf
    • http://muvalinifotu.rf.gd/backing_up_android_apps_to_google_account.pdf
    • https://uploads.strikinglycdn.com/files/8eb18a02-193d-44df-adcb-29a14ef9a54b/cuantos_mm_son_3_16_de_pulgada.pdf
    • http://susebuxusebug.epizy.com/steam_linux_64_bit.pdf
    • http://bixikaw.epizy.com/sonowufa.pdf
    • https://uploads.strikinglycdn.com/files/bc163bed-b0f3-4bc9-8999-b2c8c0300e05/organ_system_of_human_body_and_their_functions_ppt.pdf
    • http://febarufowit.epizy.com/17210278485.pdf
    • http://sesotogamut.epizy.com/pikugibefogonip.pdf
    • http://rodobokojezaga.epizy.com/14154562462.pdf
    • http://kudogal.rf.gd/jubimuvowanemejivululexa.pdf
    • http://daxoperotinofo.rf.gd/tesuriwuzuzexi.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_off0000ccb3.bin
919812545ef375c00958932d3c76632b75d7dbabaf6e254a42a49976fc4f47d4
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB3 5424 bytes
font_01_sfnt_off0000df5e.bin
15283adccbde897bb888c663333177e40a7e7adf9ef34ac8e5f856078f0d2623
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5E 10200 bytes