PDF malware analysis — malicious · f45bdbd02f00e601

MALICIOUS

PDF

76.2 KB Created: 2021-03-19 19:06:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0b5e93a8cfa1518f7e12e668dd1c77c4 SHA-1: 9a2c8cbad113037c097f730c6e8e0741537e67a7 SHA-256: f45bdbd02f00e6013a5ec485f433d48bb1d545b47b0e6284de9dc4c0e7cda052

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 URI pointing to a suspicious domain, which is likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text that could be used as a lure.

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/123?utm_term=bed+making+nursing+sheets
- http://about-fb-support.com/coefficient_of_dynamic_friction_lab_reportmszp5.pdf
- https://static.s123-cdn-static.com/uploads/4495391/normal_5fc6a4f3a917a.pdf
- https://cdn-cms.f-static.net/uploads/4369306/normal_6051452a8a8de.pdf
- https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/210410.pdf
- https://kavikazu.weebly.com/uploads/1/3/5/3/135392310/jitid_nowunupijisumis.pdf
- http://waliduv.mypressonline.com/lidujisutajunutopuxidu.pdf
- https://static.s123-cdn-static.com/uploads/4393362/normal_5fe2790557f04.pdf
- http://zebozewazogaso.scienceontheweb.net/5758670557.pdf
- https://fafafupoxojamu.weebly.com/uploads/1/3/5/3/135350358/10055df0af0e02.pdf
- http://alexandreablog.com/god_i_look_to_you_bethel_chordsm4n38.pdf
- https://static.s123-cdn-static.com/uploads/4475570/normal_5ffa729082d41.pdf
- https://static.s123-cdn-static.com/uploads/4369768/normal_5fd078164485d.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://rosajeku.myartsonline.com/10354044083.pdf
- https://s3.amazonaws.com/vuliwisuwig/vunadoripiw.pdf
- https://uploads.strikinglycdn.com/files/6f153d50-2036-43ab-8e05-81da64ac6900/52812027414.pdf
- https://s3.amazonaws.com/jemisajoda/wajubawufu.pdf
- https://s3.amazonaws.com/nolarifaforuxop/god_of_war_2_game_android.pdf
- https://s3.amazonaws.com/gotijejaj/28026762591.pdf
- https://uploads.strikinglycdn.com/files/d1328034-95d2-4991-a473-dbdca30c1d39/73568282590.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_off0000eb50.bin` `d79f99a762b8473e1bb70392ec17d172d02a2e8a836157b4f6e68a17f29daa23`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB50	5320 bytes
`font_01_sfnt_off0000fd3f.bin` `edfab95a12de182080b556e75f109a60f5bf12629de8b06e8039211143bacc70`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD3F	10808 bytes

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