PDF malware analysis — malicious · adb678b22d337db6

MALICIOUS

PDF

92.4 KB Created: 2021-04-01 16:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 847e842c8798f1b740a911da4319a41a SHA-1: 7226fcc5541f6c6136d405df9f100ad47cf28c48 SHA-256: adb678b22d337db67d861755dcb3a9cf6a32e8a16bec37b25ceb39ab55fede3a

126 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, indicating it is likely a phishing or malware distribution document. The document body and embedded URLs suggest a lure for downloading a 'free study bible for android', which is a common pretext for distributing malicious content. The presence of multiple external URIs and link farm characteristics further support this assessment.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://seumenha.ru/strik?utm_term=free+study+bible+download+for+android PDF link annotation
- https://tapalezigoluv.weebly.com/uploads/1/3/4/3/134305255/a39d652e5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4423699/normal_5ff85e57952d9.pdfIn PDF document text
- https://botiwugagow.weebly.com/uploads/1/3/1/8/131872238/3c6ee7ce.pdfIn PDF document text
- https://kutobuxuvesoga.weebly.com/uploads/1/3/0/7/130740510/144fce26d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410217/normal_5fd9074595ac5.pdfIn PDF document text
- http://boguzimaro.getenjoyment.net/food_carbohydrate_chemistry.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479904/normal_6010a0d82a556.pdfIn PDF document text
- https://vudolizozirotor.weebly.com/uploads/1/3/2/8/132815306/fa880cac2f526.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449392/normal_60436d69f3206.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4374369/normal_5ff46f9c426ae.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://lutepotazor.onlinewebshop.net/how_to_use_canon_mg3500_scanner.pdfIn PDF document text
- https://s3.amazonaws.com/loxopudizus/what_is_computer_networking_course.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0ab347c4-4e34-4ede-ae02-f01aee976716/demonic_witch_costume.pdfIn PDF document text
- https://s3.amazonaws.com/kujesulad/44263721965.pdfIn PDF document text
- https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_e2cee99ae7ff46c68e714ec454c786ad.pdf?index=trueIn PDF document text
- http://bepolujogox.atwebpages.com/hazardous_waste_management_notes.pdfIn PDF document text
- https://s3.amazonaws.com/nosepevozux/6966277686.pdfIn PDF document text
- http://kafotafuvodalix.onlinewebshop.net/12954576292.pdfIn PDF document text
- https://d6504552-49b0-4b7d-b1ff-94f9e1082b83.filesusr.com/ugd/1f0558_96a30420894f40dead61d43da6a09ad6.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/607cb531-3f7a-4d8d-8c83-71e6ea9efa31/fluke_323_price.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3de5c122-5f6e-43e1-ad8e-1d301107a981/zobebujizafuzujagapaw.pdfIn PDF document text
- https://fa5d8e44-005d-4c05-925d-ba60cb7f5023.filesusr.com/ugd/121e37_81d373c16a50407b958fc73f2d995a6b.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00011de2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DE2	5072 bytes
SHA-256: `336ba634781fc887d81b8d2d723651a404c285178aae008b1b8be6d3e19d791e`
`font_01_sfnt_off00012f3e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F3E	11380 bytes
SHA-256: `631322a376c5cb8d5ec891c182e6411bb0df8a1b309b7cf9680c81a2db29f65a`
`font_02_sfnt_off000155ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x155EE	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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