Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc57d322054d2495…

MALICIOUS

PDF

79.1 KB Created: 2021-05-03 17:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 4d864f76f4337ae0dc673e1cdc7bdd21 SHA-1: 8fbf62a9ba5f9105484696fe8c6fbbb050d99a9d SHA-256: cc57d322054d24954c38f71953dde66d4b322da4c6b994b9fe158ae82364b3e6
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'lozipotod.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a 'spanish dictionary app'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/strik?utm_term=best+free+spanish+dictionary+app PDF link annotation
    • http://help-copyrightservice.xyz/pitawedomagupuri5wa1l.pdfIn PDF document text
    • https://cdn.sqhk.co/gevanadu/igfngec/pejodaparexali.pdfIn PDF document text
    • http://axecheat9.xyz/artculo_430_de_la_constitucin_mexicanaaglvw.pdfIn PDF document text
    • https://cdn.sqhk.co/debefuki/1iigc2u/add_animated_gif_to_video_iphone.pdfIn PDF document text
    • http://katermore.ru/fopepuvurogemezomopadc92os.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/6ljj0Vb/76217691719.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457838/normal_60083607344cd.pdfIn PDF document text
    • http://natgood.space/jemivonuxunexatepuben0tkv.pdfIn PDF document text
    • https://cdn.sqhk.co/vimerokil/gflhcii/madovovenexixugepe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465538/normal_602a78f4daadf.pdfIn PDF document text
    • http://begemotiks.space/punobituxamuzsgvm7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473640/normal_5fedb86290664.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/fjgWdgi/punimej.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/sutawowirosuvuv/magadexinekeg.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/how_to_contact_panasonic_customer_service.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/walmart_tires_p225_65r17.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/78019657970.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/how_to_love_thee_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/omnisphere_2.5_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/pafefegusazoxuzufapowebi.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/browser_dengan_vpn_di_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/wegivuvogagilujarebul.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/sarah_dessen_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/the_martian_andy_weir.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_off0000f8f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F7 5360 bytes
SHA-256: 253d2869c2e82c696ff3652c72a608570a2125a1bc9aea7bdc8b0f75c3eda659
font_01_sfnt_off00010b3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3B 10484 bytes
SHA-256: 677a521caf73317a9351e7190b180b1ff22a5a32876e431778b31f60d25b1dbf

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