PDF malware analysis — malicious · f79814229c672dea

MALICIOUS

PDF

72.2 KB Created: 2021-02-19 03:58:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28

MD5: dd177874b246fce1bcddfddbb5d3d356 SHA-1: 941d4c9f6907b0626a0a8f949b29c7be321fbe46 SHA-256: f79814229c672dea06eed00a8c257ee6f769573ffdb921f218c99ce76eda98f0

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 URL, identified as a high-risk indicator. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'atomic size trend in d block' which is likely a lure to disguise the malicious nature of the PDF.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=atomic+size+trend+in+d+block PDF link annotation
- http://vvinorama.website/counter_strike_source_modern_warfare66g5t.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4388815/normal_6008a09264fb8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377407/normal_5fdc67d86ad75.pdfIn PDF document text
- https://cdn.sqhk.co/kulobibab/iaifgeT/sakutil.pdfIn PDF document text
- https://cdn.sqhk.co/futevanu/ijClzzK/green_dot_walmart_money_card_dispute_form.pdfIn PDF document text
- http://sedouche.xyz/6291906739583oil.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408599/normal_5fdfaadcce464.pdfIn PDF document text
- https://cdn.sqhk.co/mupalewefe/hJNhgja/zesajuwokaxakiteb.pdfIn PDF document text
- https://cdn.sqhk.co/xejarirep/a5HicRd/najetodibevukefizirif.pdfIn PDF document text
- https://cdn.sqhk.co/nupozifulija/cYknrfL/nowodadimezaseb.pdfIn PDF document text
- https://cdn.sqhk.co/mixaluwekitu/hbNh7jj/89417029534.pdfIn PDF document text
- https://cdn.sqhk.co/fakineduxafe/b8Jgiie/29649530208.pdfIn PDF document text
- http://5euro.info/25657879551ggwok.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df56.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF56	5116 bytes
SHA-256: `13a6c16f8bba664261620a919df3aa38563a31eee3425de047097c2f626f2372`
`font_01_sfnt_off0000f0b1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0B1	10396 bytes
SHA-256: `a967d4da3fb8ff462f028c48d685aa8c1a38363ebdf370b7371f2ef1386e32e6`

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