PDF malware analysis — malicious · dd4122162c151e2f

MALICIOUS

PDF

72.5 KB Created: 2021-02-20 17:32:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23

MD5: c88942507e7551fb822831bed9b3042b SHA-1: 15a3c712f74b4e106845d6b8f3f9ca54a9cc1696 SHA-256: dd4122162c151e2fa457684bd9efe1f423fd08e992c72130ed016bcff8e92da5

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a 'chapter 7 summary'. No scripts were extracted, but the presence of multiple unknown URLs indicates a strong likelihood of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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/aws?utm_term=an+actor+prepares+chapter+7+summary PDF link annotation
- http://drovazvenigorod.ru/ffxiv_mining_leveling_guide_50-60e7g2a.pdfIn PDF document text
- http://trend-sales.fun/billboard_2018_music_awardsb7pen.pdfIn PDF document text
- https://cdn.sqhk.co/jifegusewe/RNCQjjJ/97655340547.pdfIn PDF document text
- https://cdn.sqhk.co/madagijoj/9hhMchf/89062715204.pdfIn PDF document text
- http://keep-travel.com/nevivesinirepblcvf.pdfIn PDF document text
- https://cdn.sqhk.co/pozusonitid/jqidqjf/lexuto.pdfIn PDF document text
- http://ukranews.site/popazenonoqjobg.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/rurosaveruk/perfect_backing_track.pdfIn PDF document text
- https://s3.amazonaws.com/bulikowexunepov/29534938854.pdfIn PDF document text
- https://s3.amazonaws.com/bupijila/chamanthi_name_in_english_information.pdfIn PDF document text
- https://s3.amazonaws.com/zupenafud/92028023602.pdfIn PDF document text
- https://s3.amazonaws.com/daniwodug/55157983781.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e002.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE002	5312 bytes
SHA-256: `c07672e194e93b5d0faf37bada73a8ad25d4fb02942116f2930f9cbde785fa3f`
`font_01_sfnt_off0000f1f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1F6	10412 bytes
SHA-256: `9fecee3ed405bb25d6313b0859f102bf398051bd45c99236d16c5729a2839d4b`

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