PDF malware analysis — malicious · 5ef4855ae76a0afc

MALICIOUS

PDF

87.0 KB Created: 2021-05-22 21:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 6881fc8bcb47c26efbde86476160f844 SHA-1: 1139f15448cdac56462d74755f95a8ad6042684a SHA-256: 5ef4855ae76a0afc2f6a69949e5f550231a083a081826184c99d06b93eb3c7b3

104 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

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
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://golowaki.ru/strik?utm_term=bihar+stet+computer+science+question+paper+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4499999/normal_6044f63b97052.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464330/normal_6068f4863e8d0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481072/normal_6061ed21b784f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4426571/normal_5fe1592e18520.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481402/normal_602aa769e1acf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4428061/normal_602ad10460123.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370068/normal_6026d9dc8f486.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403689/normal_604319e456e4b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412768/normal_6048d44d597f4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383467/normal_5fd63bd2c0f00.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386622/normal_600cfc6274c54.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420248/normal_60403b69cf735.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4426955/normal_5fec3059005cb.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://fedorahosted.org/lohitIn PDF document text
- https://uploads.strikinglycdn.com/files/edd6a0fa-c10f-438b-8910-c281ecd9b826/87212800184.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1340d857-33b0-4389-8c66-5535cb7a0053/raruzeronoxagosinipo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/985620b6-23cc-4dd6-b326-90a83c16c6d8/29921968264.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c309ad51-35fe-49cf-b11c-4ef8c3b83073/dederilapon.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eb65bbe9-f532-426f-88e7-85fc1d03d384/56934487951.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/83453e4e-fdea-4ce5-8a37-76e17c8120ec/57103691673.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a2e28453-e744-4671-a28d-2ec32edb9700/24550461377.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd03a07f-e586-442b-910c-a78f3016a861/zivinebopowukagiwu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c87b6137-e643-43c9-9e6f-bfc92c402c97/asphalt_xtreme_all_cars_unlocked_apk.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
- http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e793.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE793	5420 bytes
SHA-256: `e90392c1e395196cd54ec4f7c45622e87fb0c6b742423097a67208ef75051f9f`
`font_01_sfnt_off0000f9c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9C7	3720 bytes
SHA-256: `d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281`
`font_02_sfnt_off0001052b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1052B	10764 bytes
SHA-256: `c9b7a49da5420abb75d73ccf73f778a83a2b019185d76afc4e00503256335511`
`font_03_sfnt_off000129dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x129DD	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`
`font_04_sfnt_off000137dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x137DC	5336 bytes
SHA-256: `8716b0047263f6f9f62146f4fe5f70f512a5fbdd02df7d7d055060c3ff655e5f`

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