PDF malware analysis — malicious · 5a5c04319f9b09d5

MALICIOUS

PDF

80.4 KB Created: 2021-03-17 05:45:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25

MD5: fc2b6c18123739a114c7880fc7e46b42 SHA-1: eb667ec9054fecb1b848be0b44a2fea5ad2beb6b SHA-256: 5a5c04319f9b09d5c43e2caf858d9cb5bb723b0fb425dbc53e51c4349ab15c5c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating the presence of external URIs within the PDF. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was generated by a tool. The primary malicious URL, 'https://jumiwimov.ru/award?keyword=brujas+de+salem+libro+pdf', strongly suggests a phishing or scam lure related to a book or prize.

Machine Learning

Nyx PDF Classifier malicious score 0.9798

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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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://jumiwimov.ru/award?keyword=brujas+de+salem+libro+pdf PDF link annotation
- http://muldwych.com/gotomoraxoroxotepefebuxid63mm.pdfIn PDF document text
- http://mihetos.xyz/21799840699krcl5.pdfIn PDF document text
- http://mevukavotidu.getenjoyment.net/32563058431.pdfIn PDF document text
- http://metalllift.ru/tabla_periodica_completa_20191sy23.pdfIn PDF document text
- http://ujjjrrrrr.space/sony_bdp-s3200_preciozpa50.pdfIn PDF document text
- http://opros.xyz/densified_biomass_fuel_report9bi5y.pdfIn PDF document text
- http://premium-cinema.com/dell_inspiron_3520_laptop_charger36hhu.pdfIn PDF document text
- http://lovelyhouse.online/9433178003c1uni.pdfIn PDF document text
- http://procripton.com/94933865036cr93i.pdfIn PDF document text
- http://sis-paypal.com/how_to_find_the_line_of_best_fit_desmos39h4h.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4389820/normal_5fe2af4e11c33.pdfIn PDF document text
- http://begemotiks.space/demagagirekineralusogq6oqk.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4418199/normal_600352faa89b9.pdfIn PDF document text
- http://gekenig.mywebcommunity.org/77809607419.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/lazesej/matlab_plot_matrix_line_style.pdfIn PDF document text
- https://s3.amazonaws.com/dezajok/tobifatagu.pdfIn PDF document text
- https://s3.amazonaws.com/lusegokaves/vovusofuvikajo.pdfIn PDF document text
- https://s3.amazonaws.com/wetevali/94773812419.pdfIn PDF document text
- https://s3.amazonaws.com/sixenogafopoj/iata_world_city_codes.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00010439.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10439	5452 bytes
SHA-256: `75ef7890a94919b67130f3f2ef033df813c9f65ccfb049af9f0d475b4b350b4a`
`font_01_sfnt_off000116a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x116A8	12180 bytes
SHA-256: `fed942398424d0144007d1549d8916f12cf9c7e86d5e0fdd675e264989eb86cf`

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