PDF malware analysis — malicious · a4db4fcdba482d99

MALICIOUS

PDF

96.2 KB Created: 2021-02-19 19:41:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 58c6d12010a463666c453c66f0af469e SHA-1: 20b967729d81947f22a7571934cf8903c7361b24 SHA-256: a4db4fcdba482d99e0e28c05935dea53398192349fbed3eb3df5ca10b8a7decc

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded URI pointing to 'baarspo.ru', which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to printer parts. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution.

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://baarspo.ru/strik?utm_term=replacement+printhead+for+hp+officejet+6500a+plus PDF link annotation
- https://cdn-cms.f-static.net/uploads/4384655/normal_60293c8139430.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4382953/normal_5fe2b41ebea0a.pdfIn PDF document text
- http://thestablestl.com/bisuzomuvawpt5b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415739/normal_6019ab7537982.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4381531/normal_5ff8a8776c60f.pdfIn PDF document text
- https://vupixesit.weebly.com/uploads/1/3/2/7/132740805/2abafd156d3f3c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370780/normal_600efa403c7bb.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/woxewiwupir/berlin_tegel_airport_arrival_information.pdfIn PDF document text
- https://s3.amazonaws.com/kodipopujufipig/tremulous_noun_form.pdfIn PDF document text
- https://s3.amazonaws.com/kotidox/beadboard_sheet_ceiling.pdfIn PDF document text
- http://sazojojuw.rf.gd/azhage_azhage_song_kuttyweb.pdfIn PDF document text
- http://fijopuk.rf.gd/microsoft_publisher_identification_card_template.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_off0001391a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1391A	5900 bytes
SHA-256: `828b2adc0cf79356666590e7eeddba6742d03a671e54bc43a11dba06310ec7f4`
`font_01_sfnt_off00014d0c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14D0C	11296 bytes
SHA-256: `1303a045930ed3500439302e340cf93ef90bf7ae2974ce6bcabe4e988753af1a`

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