Malicious PDF — malware analysis report

Static analysis result for SHA-256 809cb4aec419dce5…

MALICIOUS

PDF

100.9 KB Created: 2021-03-12 19:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 73599785eea1b0a16370673668838dcf SHA-1: 35e367e851dad2c192ea278e8b42c2b6ce9a7940 SHA-256: 809cb4aec419dce581da5df577f63b275aeaac5118c1f9767ada91b5f1ff1509
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'ponafet.ru', which is likely used to deliver a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to financial modeling, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/aws?utm_term=how+hard+is+it+to+learn+financial+modeling PDF link annotation
    • https://cdn.sqhk.co/diwiporeb/hiYThgq/facebook_friend_location_finder_app.pdfIn PDF document text
    • https://cdn.sqhk.co/vemoderama/hgeVjjA/zotemuwitej.pdfIn PDF document text
    • http://prosale.company/jinififuwexamijoguwehmc2v.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/bgggdhh/bixagezo.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/jbgfnHf/identity_v_hunter_tier_list_season_13.pdfIn PDF document text
    • https://cdn.sqhk.co/tipadasa/hhdZkhI/50041803357.pdfIn PDF document text
    • http://micrometerdigital.xyz/bahnschrift_condensed_bold_fontl021m.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://uploads.strikinglycdn.com/files/1e6704c9-4de1-472b-a670-4f8b4de3a470/tabla_periodica_interactiva_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/kulapurug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d666deab-e0b7-4726-b87a-cec18aa4aa48/can_you_air_fry_a_whole_turkey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34fcc316-c263-40f8-89bf-069aef4d49cd/wing_chun_wooden_dummy_used_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dad3a59a-28ac-4e64-ad03-f6a5ac0e0239/lanoxitenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26b56341-3144-4b4e-b7af-1aae4bf18b14/72258154892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f61fd2bf-8d6e-4785-ab33-207aef8ac367/what_foods_to_avoid_for_diabetic_diet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7619a5c3-7038-47a3-84bd-7b2bc43cf58f/head_first_python.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4476cc1a-e6ac-4be1-b41f-c18135ef678a/asus_double_450mbps_n_router_rt-n66r.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/85988127513.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/869baade-5c29-41ed-a36f-dd26de4415ca/77049754808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39aeda9b-f34c-4f0b-a59c-ca4ab2fe212d/jesevisapalotete.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_off0001410e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1410E 5276 bytes
SHA-256: d8f6f64f94fd7956fbbec4d4b1b35f10e09783d58fb61413d5527b5ce3b2ebfb
font_01_sfnt_off000152db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152DB 10980 bytes
SHA-256: 85d90123a3fd36c579a28ede00a43e950adc25c799203186e10995dcc71d0cce
font_02_sfnt_off00017800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17800 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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