PDF malware analysis — malicious · 258ffa6662cb0fb9

MALICIOUS

PDF

87.3 KB Created: 2021-05-18 03:26:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 506df60b26e889e94c36853a83ba5244 SHA-1: 5a60f7baebd259d68e94ae37b85942c5532846a3 SHA-256: 258ffa6662cb0fb9ee13539ee98182e588f1cd14d38c0f4d82af39479534af43

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, specifically as a phishing trojan. An external URI pointing to 'dafemum.ru' was extracted, suggesting a phishing lure. The document body, though heavily obfuscated, contains text related to 'date sheet' and 'roll no slip', reinforcing the phishing pretext. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of 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://dafemum.ru/strik?utm_term=aiou+date+sheet+roll+no+slip+autumn+2018
- https://kijapadawoli.weebly.com/uploads/1/3/4/9/134900431/9fca2.pdf
- https://bowasizavaxilek.weebly.com/uploads/1/3/4/0/134042597/5969803.pdf
- https://static.s123-cdn-static.com/uploads/4485299/normal_5fdeaf8427a60.pdf
- https://cdn-cms.f-static.net/uploads/4402721/normal_5fe65f01dda66.pdf
- https://cdn-cms.f-static.net/uploads/4388598/normal_606074be87f7b.pdf
- https://cdn-cms.f-static.net/uploads/4471240/normal_602869b45a7e7.pdf
- https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/pukakujumi_pilozejawuda_sajegin.pdf
- https://cdn-cms.f-static.net/uploads/4382208/normal_605534c09e371.pdf
- https://dirovobu.weebly.com/uploads/1/3/5/3/135319654/5600049.pdf
- https://bibatajikoxego.weebly.com/uploads/1/3/5/3/135315017/bidudeduv.pdf
- http://kotonopiz.iblogger.org/vesufitededim.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://xepanagul.rf.gd/bookkeeping_exam_with_answers.pdf
- https://s3.amazonaws.com/gotitibekovi/62405178299.pdf
- http://meloxosiza.epizy.com/47980288543.pdf
- http://lemimokodifuve.epizy.com/allen_carr_easy_way_to_quit_smoking.pdf
- https://s3.amazonaws.com/muvemasoxaji/17356008483.pdf
- http://texavit.epizy.com/35015548448.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_off000115a6.bin` `d43252d687946595e060ab5c1804a38a67cf6b1ed3914f16c826ac16351c599b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x115A6	5708 bytes
`font_01_sfnt_off000128e4.bin` `2df320ec918055664f8d0068147c6d66af6c46bc7df7c53240d3ae424080e263`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x128E4	11536 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.