PDF malware analysis — malicious · 7067e094bb1014cf

MALICIOUS

PDF

74.8 KB Created: 2021-03-27 17:09:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1ad54e1aa977178b92b020c218288629 SHA-1: 6b51ec188928e819ca0accec6905dc789aa0075d SHA-256: 7067e094bb1014cfe0d298977f7e49757114a0feae3310fa7e10fe7ff6711b0c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL pointing to 'golowaki.ru', which is likely part of the phishing lure. The document body, though heavily obfuscated, contains text related to benchmarking and the wkhtmltopdf tool, suggesting a pretext for directing users to the malicious URL.

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://golowaki.ru/123?utm_term=benchmark+free++for+pc
- http://vitetiw.getenjoyment.net/85171655431.pdf
- https://cdn-cms.f-static.net/uploads/4427287/normal_5fe663df5399c.pdf
- https://cdn-cms.f-static.net/uploads/4459628/normal_60315c5f20d3a.pdf
- http://worabipupe.mypressonline.com/furajowakopetosasuwiseko.pdf
- http://rexonina.medianewsonline.com/revised_common_lectionary_year_c.pdf
- http://monubaz.iblogger.org/84183218683.pdf
- http://kuzikugipitimiz.iblogger.org/what_is_the_sum_of_infinite_geometric_series_3_4.pdf
- https://cdn-cms.f-static.net/uploads/4381539/normal_605b931d866fc.pdf
- https://cdn-cms.f-static.net/uploads/4409806/normal_6031710cc35a3.pdf
- http://fujigukatujewu.medianewsonline.com/58807679265.pdf
- https://cdn-cms.f-static.net/uploads/4492253/normal_60513c5b49b34.pdf
- https://static.s123-cdn-static.com/uploads/4411932/normal_600460dbe6437.pdf
- http://timedezalug.iblogger.org/julijidukopixanuv.pdf
- https://cdn-cms.f-static.net/uploads/4483839/normal_60582388a1426.pdf
- https://static.s123-cdn-static.com/uploads/4366011/normal_5fc8f8afc0b3b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://difuxifomag.rf.gd/lagu_on_my_way_illijah_stafaband.pdf
- http://biforobajimebug.epizy.com/edtpa_special_education_handbook_2020.pdf
- https://s3.amazonaws.com/jazamerijekufol/mejolix.pdf
- https://s3.amazonaws.com/fomudebipefasu/vujidanomafiwabujulifuza.pdf
- http://noderisaxe.rf.gd/nupufefafopasipuk.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e7e4.bin` `fc01c7aa8e889341a81590483162c0619f7d219ede92ffbf6bbb867e856b19c3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7E4	5160 bytes
`font_01_sfnt_off0000f947.bin` `039156408f6a61b69cf38d6903974159285af516fea48b91d606d642f13a14a8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF947	10448 bytes

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