Malicious PDF — malware analysis report

Static analysis result for SHA-256 964af0f88e82c7bb…

MALICIOUS

PDF

73.1 KB Created: 2021-05-18 22:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6a07204322c34d0795146adff592fc5c SHA-1: b16bdb9c263d9926bf0af5f368c44ff4eb8943f9 SHA-256: 964af0f88e82c7bb3dcc6d6237773eb2dfc60fec588cc4c358aa5bb741668d09
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for free audio recording software, likely to trick users into visiting a malicious site. ClamAV and ML classifiers strongly indicate this PDF is malicious, classifying it as a phishing trojan. The embedded URL is the primary indicator of malicious intent, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/strik?utm_term=best+free+audio+recording+software+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408879/normal_6041e24eab98e.pdfIn PDF document text
    • https://waxukazo.weebly.com/uploads/1/3/1/0/131071095/movize.pdfIn PDF document text
    • https://nefawuwezogixo.weebly.com/uploads/1/3/1/1/131163734/demofuvube-ribevefuviwapol-pivixafaf.pdfIn PDF document text
    • https://jivimukik.weebly.com/uploads/1/3/0/7/130775904/vasawiwuritova.pdfIn PDF document text
    • https://lotuliwupufak.weebly.com/uploads/1/3/4/8/134873452/1348fbb45b64.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496378/normal_5fe0fb8724854.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366009/normal_6003e883db1ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487625/normal_5fd112cc28ce3.pdfIn PDF document text
    • https://danifiwap.weebly.com/uploads/1/3/4/5/134585556/9d8b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415051/normal_5fdc0de84f311.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tugumeb/the_woman_in_the_window_movie_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/wezuxezojuref.pdfIn PDF document text
    • http://siwupogogu.rf.gd/zoluzaromegupupilatezade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55e3c4c5-f721-4cb2-98a6-9f96ffda79fa/organizational_behavior_theories_of_motivation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fc69500-0e36-4b2b-91f5-96b13f62904a/joker_quotes_dark_knight.pdfIn PDF document text
    • http://gewevamaki.epizy.com/audiobook_er_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ac05349-14a7-4c04-9b38-588f129805b3/brinkmann_turkey_fryer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/45894794410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0e22cd8-a3a6-4768-bf07-97ea989738a0/cuantos_litros_de_sangre_tiene_el_cuerpo_humano_nio.pdfIn PDF document text
    • http://sedaweguwuguxu.rf.gd/85099291858.pdfIn PDF document text
    • http://venugowus.epizy.com/56779444122.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/8278551884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee90c77e-9a33-45c0-82c9-e8120725ba56/tekegumolawoxelo.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/astroneer_how_does_the_trade_platform_work.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e17e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17E 5572 bytes
SHA-256: 2d918af5866bff5731603d69105e2437c7383bc19f514f1034d5b28ac9ba0a39
font_01_sfnt_off0000f49f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49F 9964 bytes
SHA-256: 458fb30cf8550eb775faf2bb44d5686a601c94be68ad734383c69a1156ebdfad

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