Malicious PDF — malware analysis report

Static analysis result for SHA-256 846895b6cf96a7f5…

MALICIOUS

PDF

73.8 KB Created: 2021-02-09 16:55:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: db081bd96df6d52e7ec7d1b8be438fd6 SHA-1: a36d2ce47e85e2be253da359a3ca03d63625ef16 SHA-256: 846895b6cf96a7f5d213c6dc09e30969ebdc6d86982b34fe0f5dc4f5f7dd13c0
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that, when visited, likely leads to further malicious content or a phishing page. The document body, though heavily obfuscated, suggests a lure related to a 'police arrest report template'. No scripts were extracted, but the presence of external URIs points to a phishing or credential harvesting 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://druttle.ru/aws?utm_term=police+arrest+report+template PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391047/normal_5fefb34a0a54f.pdfIn PDF document text
    • https://cdn.sqhk.co/disonixures/Rid9jiE/jasemaliwodenitobumerufo.pdfIn PDF document text
    • https://cdn.sqhk.co/tinupolureg/ifmzjIw/ivar_the_boneless_wife_death.pdfIn PDF document text
    • https://cdn.sqhk.co/vejurumilef/b32mgjd/refapinutemijel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502188/normal_5ff8d325c5d0d.pdfIn PDF document text
    • https://cdn.sqhk.co/kepilujofeje/ghmsyvN/viking_longship_facts_ks1.pdfIn PDF document text
    • https://cdn.sqhk.co/semiwewedazi/PfwGiby/donuts_drift_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuwutitaw/whdojfs/los_sims_freeplay_hack_ios_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xopuwatipo/hijjggo/music_lab_song_maker.pdfIn PDF document text
    • https://cdn.sqhk.co/jitegoji/ujjoZjd/world_cup_2022_host_change.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502563/normal_6005ee165b646.pdfIn PDF document text
    • https://cdn.sqhk.co/samivegin/hjdPRgg/97224306177.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxobilan/Sjjcgdm/22867259447.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/0jaIjbU/zeds_dead_hockey_jersey.pdfIn PDF document text
    • https://cdn.sqhk.co/sevilebup/oWAPiia/word_farm_cross_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rodigapigeta/engagement_party_checklist_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/61254130321.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/24853099763.pdfIn PDF document text
    • http://jalameki.epizy.com/kibuvonakomujovadofe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76D 4764 bytes
SHA-256: 38c7030f3321cd9738ecc925514db69c39632d271939c9b8c6d67095b3c48734
font_01_sfnt_off0000e791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE791 10512 bytes
SHA-256: 4fbe1a7a4486ec73d7c080bbe1abb284dcf79921bba1f8ffba2513f1e82175be
font_02_sfnt_off00010ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA2 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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