PDF malware analysis — malicious · 370a7ae6dba3c343

MALICIOUS

PDF

64.9 KB Created: 2021-04-07 03:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 40be1d1b819058ad2132323d0855b5d0 SHA-1: a4945fa73e335af71e3a4a0acf7acce2e2a7db6d SHA-256: 370a7ae6dba3c343c5dbc57e2786b1f1cd75914b144e012be0fd0f82eb527b19

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though truncated, suggests a lure related to academic content, likely to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the high confidence detection indicate a phishing or malware distribution attempt.

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://bologen.ru/wix?keyword=physics+slinky+lab+answers
- http://silvanozito.online/how_to_hear_tv_through_headphones_xbox_onezheia.pdf
- http://afracheat8.xyz/tiwofov5kd6s.pdf
- http://lesanuzununefa.22web.org/carol_of_the_bells_piano_solo.pdf
- https://cdn.sqhk.co/nawiwola/ggqghif/dora_and_friends_into_the_city.pdf
- http://alexsaf.ru/63885421340d9txw.pdf
- http://termo-nord.tech/does_canon_elph_180_have_wifia0sen.pdf
- https://cdn.sqhk.co/pabilere/idgd9Hc/buvijovosomokipiveniko.pdf
- http://vamoktin.ru/526535303097wdk5.pdf
- http://ralanizu.iblogger.org/ielts_speaking_part_2.pdf
- https://cdn.sqhk.co/zutijujes/TQihfja/city_story_game_download.pdf
- http://insurancecarusa.com/market_basket_analysis_powerpoint_templater0630.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/padosumifubobo/reporting_exploratory_factor_analysis_results_apa.pdf
- https://s3.amazonaws.com/wulagisi/77910364657.pdf
- http://jepafuzezax.epizy.com/lupazojuwegekit.pdf
- https://s3.amazonaws.com/pujirageg/tanibemeloto.pdf
- https://s3.amazonaws.com/wexoteluwag/wekeruk.pdf
- https://s3.amazonaws.com/fexuror/wumemisibaxubonoxuwowodav.pdf
- https://s3.amazonaws.com/lebaxa/144833596.pdf
- https://s3.amazonaws.com/dobikasukavu/muxusabusixumewarigaw.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_off0000c1e8.bin` `af0131241135aad39d1ae9d0cc95d50af75ebdab55624fe065bf04e68b6628c1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC1E8	5288 bytes
`font_01_sfnt_off0000d3f4.bin` `ac85b36c1dfc2ac700a36efddafcf182357c30bff3e616970a9bbc11d761a152`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD3F4	10116 bytes

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