PDF malware analysis — malicious · 13fce75fb5d76e81

MALICIOUS

PDF

82.3 KB Created: 2021-03-27 22:10:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6055b12e91c0645d8a4058045759fa47 SHA-1: a82bf729b69782f8cbfc5d9fa8d13034843a957e SHA-256: 13fce75fb5d76e817625fad9119261eae3aa10ff9e502f2a127f9084ea37787e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for malicious purposes. The document body, though heavily obfuscated, contains text related to daylight savings time, suggesting a social engineering lure to drive traffic to the malicious URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/aws?utm_term=how+to+change+to+daylight+savings+time+on+g+shock
- https://cdn.sqhk.co/nemisova/KXfHJjd/the_last_door_switch_crash.pdf
- https://cdn-cms.f-static.net/uploads/4365606/normal_605f7ebab37ab.pdf
- https://static.s123-cdn-static.com/uploads/4444853/normal_5fc59fbe4c70f.pdf
- http://nashremont.site/best_free_online_movies_sites_yahoo_answersxn5wz.pdf
- https://cdn.sqhk.co/fodibaniwe/7K4zsge/20230986776.pdf
- https://cdn.sqhk.co/zuzonoviza/cZheij3/56787816115.pdf
- http://seplafond.xyz/nepaduvovf4uzz.pdf
- http://qwert-ita.fun/baby_bjorn_bouncer_bliss_quilted_cotton55oww.pdf
- http://salonlabs.xyz/how_to_calculate_cash_flow_to_creditors_from_income_statement3hup4.pdf
- http://contentmedialiteracy.com/java_programming_downloadpmi73.pdf
- https://cdn-cms.f-static.net/uploads/4383567/normal_60589342771b7.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/nisiwanolom/d.d._peckers_west_ashley_menu.pdf
- https://s3.amazonaws.com/zugutixe/listening_cambridge_11_test_2_answers.pdf
- https://s3.amazonaws.com/jiwisigetizoxif/53555061105.pdf
- https://s3.amazonaws.com/fazujo/wapuvegufiwomope.pdf
- https://s3.amazonaws.com/mejados/catechism_class_baptism_quiz_answers.pdf
- https://s3.amazonaws.com/lomuper/48455411946.pdf
- https://s3.amazonaws.com/liluvad/5265896387.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_off000104b0.bin` `e627f758276bc62f0e07ac5405f69adc0720cc1d2cbca4e1123e57390ab56e11`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104B0	5536 bytes
`font_01_sfnt_off00011782.bin` `22d232af9cafe51d6ee55665f385e5e2484369a415c989d8e2a3299926f1eb82`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11782	10908 bytes

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