PDF malware analysis — malicious · 4066f55eb612d2e4

MALICIOUS

PDF

80.0 KB Created: 2021-04-03 16:55:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e03bce509cc2a71669d1dcbe7f390243 SHA-1: 745a19038e5c50f4509ee57492cec6250131ee81 SHA-256: 4066f55eb612d2e43a96c8d73ef4c207ae1cdc4feeaa760d51749f7d49ccc095

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, flagging it as a phishing trojan. It contains an embedded URI pointing to 'nipisod.ru', which is likely part of a phishing or credential harvesting scheme. The document body is heavily obfuscated, suggesting an attempt to conceal malicious content or evade detection. The presence of multiple unknown URLs further supports a malicious intent.

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://nipisod.ru/award?keyword=types+of+bandages+and+dressings+pdf
- http://nosinoski.shop/sofewumezagadelipijugs08g.pdf
- http://naturalgood.space/719186430e6am3.pdf
- http://drive4mclanemilwaukee.com/xeduzuzamobubivosuzilp4pnh.pdf
- https://static.s123-cdn-static.com/uploads/4367310/normal_5fff23ab627be.pdf
- http://presentinsta.site/halloween_fake_nails_amazon2mstv.pdf
- http://ekzo-fruit.ru/2013_dodge_charger_rt_plus_specstelsq.pdf
- https://static.s123-cdn-static.com/uploads/4388842/normal_5fe259f665065.pdf
- http://comp-arenda.site/tefazedli6h5.pdf
- http://albl.ru/kuzalolu2zdc6.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/gapivegek/how_to_set_the_draw_weight_on_a_compound_bow.pdf
- https://s3.amazonaws.com/busutafitufe/a1000_yaskawa_user_manual.pdf
- https://s3.amazonaws.com/xilasisefi/xitodumuxosutagunivunikez.pdf
- https://s3.amazonaws.com/jezaxojipevu/brochevarevarura_full_movie_hd.pdf
- https://s3.amazonaws.com/xozeb/onkyo_tx-sr705_manual.pdf
- https://s3.amazonaws.com/bexolamabad/86311607524.pdf
- https://s3.amazonaws.com/bidivo/bethel_music_starlight_free.pdf
- https://s3.amazonaws.com/zusevamasor/valunaputilagazasosomizok.pdf
- https://s3.amazonaws.com/kugelilizibuwum/cisco_linksys_router_wrt120n_default_password.pdf
- https://s3.amazonaws.com/damerirazib/70934932473.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_off0000fa8d.bin` `2bc26a0068e04edaf9417226377c2f43c649e3128f461a048dc37f9dd32cc547`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA8D	5368 bytes
`font_01_sfnt_off00010ce1.bin` `d79c5d716e06461c499341e4e8a5761a4e2ce87ae9f621ae0232a04791b21681`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10CE1	10740 bytes

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