PDF malware analysis — malicious · b4fc038f60672bb2

MALICIOUS

PDF

83.7 KB Created: 2021-05-09 06:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7e338ca3b7563d5a0a96205f3d970310 SHA-1: 216298310bf8f0d3fcef032765e941675ee95b3f SHA-256: b4fc038f60672bb2b807a9ff986cafd370c2eee06a6209906e59a9a5a554f74b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL that leads to a suspicious domain, identified by ClamAV as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a book summary. The presence of external URIs and the ML classifier's high confidence score indicate malicious intent, likely for phishing or malware delivery.

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://xezojetit.ru/strik?utm_term=livro+vidas+secas+resumo+pdf
- http://meblik.su/kuxazojadufemugid0y2y4.pdf
- http://ridunculus.com/kavaw7nkws.pdf
- http://jejunobu.iblogger.org/79330005531.pdf
- http://shoop-fm.ru/twitter_login_android_tutorialo9p6i.pdf
- https://cdn-cms.f-static.net/uploads/4485573/normal_6042cf365c569.pdf
- http://axecheat9.xyz/how_to_play_la_la_land_mia_and_sebastians_themehjtx0.pdf
- https://cdn-cms.f-static.net/uploads/4450139/normal_602ecfc266fbe.pdf
- https://cdn-cms.f-static.net/uploads/4385011/normal_602f17a37bf6d.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/vexosafugunu/lopojubudopewabemosevis.pdf
- https://s3.amazonaws.com/tapelu/acorde_rem_piano.pdf
- http://depepok.rf.gd/lg_top_load_washing_machine_tub_clean_function.pdf
- http://zigetolerup.epizy.com/aptitude_test_questions_and_answers.pdf
- https://s3.amazonaws.com/kelukakeb/bajar_musica_mp3_gratis_para_celular_sin_virus.pdf
- https://s3.amazonaws.com/fajeloninesitel/zikibasufekeve.pdf
- http://kugofabafomozo.epizy.com/college_calculus_with_analytic_geometry.pdf
- http://zefifimagami.epizy.com/ei_reporting_other_money.pdf
- http://botuwosolu.rf.gd/65327894351.pdf
- http://negikapivipen.epizy.com/fodosume.pdf
- https://s3.amazonaws.com/sirilagewuga/how_to_setup_asus_rt-ac66u.pdf
- https://s3.amazonaws.com/xeruxaxer/nixudulalezudejo.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_off000106bd.bin` `af46e470565713f318908cba9ab1cfbf5865dddf9970d8bf26a97486e180ce56`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x106BD	5268 bytes
`font_01_sfnt_off0001189c.bin` `316c8807dd8d5e44a550ab91f8454243aa6516f9ec1cce89b3ab87f19e9457f9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1189C	12908 bytes

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