Malicious PDF — malware analysis report

Static analysis result for SHA-256 a32f9cea33472051…

MALICIOUS

PDF

81.9 KB Created: 2021-05-21 04:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 1633c1a5387e9385b3bd509ac764c07b SHA-1: 071b8f6489393efccab02aa9728d0c564cd5690e SHA-256: a32f9cea334720514eb12f0bc4e2c70c2799a232fd2be45444973b24f108dddd
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are hosted on Weebly and appear to be part of a link farm designed to attract users searching for movie downloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL and the PDF_SEO_LINK_FARM heuristic confirm the attempt to redirect users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=ardaas+karaan+punjabi+movie+download+480p PDF link annotation
    • https://belibezininu.weebly.com/uploads/1/3/4/8/134850089/635924.pdfIn PDF document text
    • https://wilukogata.weebly.com/uploads/1/3/5/3/135388132/fuganipubudef-tulotanumugelak-ziliguseka-genivep.pdfIn PDF document text
    • https://xixusumer.weebly.com/uploads/1/3/0/8/130814933/3840960.pdfIn PDF document text
    • https://wexubowepupewaw.weebly.com/uploads/1/3/1/8/131856394/4323793.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_605323e23451d.pdfIn PDF document text
    • https://dumexegutotopu.weebly.com/uploads/1/3/4/3/134354144/1237055.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5fddb7cc9ff20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372360/normal_60413acc21ce9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_606c868859ee6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456372/normal_5ff26c2d1b05c.pdfIn PDF document text
    • https://lewuseloti.weebly.com/uploads/1/3/1/4/131437615/1990177.pdfIn PDF document text
    • https://geripipo.weebly.com/uploads/1/3/4/3/134371036/6392021.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/lomuper/black_and_decker_drill_battery_12v_a9275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81f13526-0496-454e-bafc-0042598f45b1/first_aid_cpr_aed_participants_manual_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfa99f04-8cba-45a8-baa0-b966f5174fcd/fafofu.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/datasheet_cd4047_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/71598993759.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/wanomamoman.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/77085153757.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/11269110691.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/aida64_extreme_597.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off0000ed55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED55 6744 bytes
SHA-256: 8187145963fbf8e0b7977f93bb9cbfc296fb812f6e2b6f40a3c8d31ca5a797a4
font_01_sfnt_off0000fe3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3C 5948 bytes
SHA-256: 24cda1708e134a0ee60026f89920d3ada0ec32705be90ad6c43d56da96b8545d
font_02_sfnt_off00011281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11281 11356 bytes
SHA-256: 30d69e7be1b1f3d87b65b3ec59da7f56524287cbeb0b71948d6d5d830ecf3ffe

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