PDF malware analysis — malicious · b2a3339cdd2f3957

MALICIOUS

PDF

67.4 KB Created: 2020-12-23 21:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: abcafb7792f4a3db34e839abae836ed1 SHA-1: 9c2aa37bb0003681d6d6758eca95e48201894046 SHA-256: b2a3339cdd2f3957cc8167f19d978e9db78076dbde5bee2198fd816bd8369563

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafffe.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a 'travel guide'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing attack.

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://trafffe.ru/aws?utm_term=aaa+travel+guide+ireland PDF link annotation
- https://cdn-cms.f-static.net/uploads/4489042/normal_5fab353e4147f.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/gedimuta/black_s_law_dictionary_10th_edition_free.pdfIn PDF document text
- https://s3.amazonaws.com/lixisariwulo/zewebotokekegoxeluso.pdfIn PDF document text
- https://s3.amazonaws.com/jozetej/soft_launch_email_template.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2b2a885c-a301-405e-b3ba-ea4606450f1b/ruxizotapegujusumameba.pdfIn PDF document text
- https://s3.amazonaws.com/pukasojalu/zivipuj.pdfIn PDF document text
- https://s3.amazonaws.com/dedinavesute/69093883351.pdfIn PDF document text
- https://s3.amazonaws.com/bepukuba/7562440214.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/35285866-a5a3-432a-81cd-a157a473dabc/what_is_palimony_law.pdfIn PDF document text
- https://s3.amazonaws.com/sedimeraxufi/android_studio_sign_apk_debug.pdfIn PDF document text
- https://s3.amazonaws.com/waxapoz/bhu_bsc_math_syllabus_2019_download.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_off0000cbc8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCBC8	4864 bytes
SHA-256: `61db5dac6deabc8ece889bb8262a114b60f3af032065c295a19e9f8fbad63dd4`
`font_01_sfnt_off0000dc68.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC68	10696 bytes
SHA-256: `a8fc9d931a4587bec9a424d08f5596e45a969f3a5bf6cd7ed2679b1def94a1a0`

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