PDF malware analysis — malicious · 2fa06f6642cc68c4

MALICIOUS

PDF

89.2 KB Created: 2021-06-03 11:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 9ddd49c7d5014d82e4487e1eb60d62be SHA-1: b016608da748cf56177e576cb642138e19b0b46d SHA-256: 2fa06f6642cc68c427a92dbb069054c83893f563a9fcf4fb31097452aa2e7f3d

176 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. It uses a QR-code lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 6

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
QR-code redirect lure medium SE_QR_LURE

Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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://infrive.ru/pbw?utm_term=whatsapp+web+download+for+jio+mobile PDF link annotation
- https://cdn-cms.f-static.net/uploads/4381738/normal_604a78ae6918b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4381085/normal_6008d27ad6122.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4449618/normal_5ff7cfbaa1252.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409801/normal_602d2df20ade7.pdfIn PDF document text
- https://farevilifowo.weebly.com/uploads/1/3/5/3/135390938/07277a647d572.pdfIn PDF document text
- https://mafenipo.weebly.com/uploads/1/3/4/8/134879688/9adf4688.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4365542/normal_5fc6de8420b6d.pdfIn PDF document text
- https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/6451487.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4416504/normal_5ff64b436f444.pdfIn PDF document text
- https://numeroluxovuz.weebly.com/uploads/1/3/4/7/134733954/5749770.pdfIn PDF document text
- https://fuwodeku.weebly.com/uploads/1/3/6/0/136095673/7160152.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367302/normal_603cc29be1caf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490930/normal_603862078bd22.pdfIn PDF document text
- https://gesogakit.weebly.com/uploads/1/3/4/5/134581759/377f5a.pdfIn PDF document text
- https://zonexaxu.weebly.com/uploads/1/3/4/7/134700630/viwita.pdfIn PDF document text
- https://vibufimibe.weebly.com/uploads/1/3/0/7/130738819/d77bd9b.pdfIn PDF document text
- https://zinixukugezevul.weebly.com/uploads/1/3/4/6/134612333/budebunuloliz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490725/normal_60641b827258c.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
- https://uploads.strikinglycdn.com/files/aade9c7c-cfa3-4dca-b0a2-9060bdb7b07a/pathfinder_kingmaker_weapons_finesse.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cb06365b-939d-4aa2-8a74-2d1f8785ec1e/9929251801.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00011072.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11072	5392 bytes
SHA-256: `59ae293fdf0f7b203964b4baa831498d1dac1288fafc2b0fbc92048d55158b3c`
`font_01_sfnt_off000122a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122A1	11372 bytes
SHA-256: `a4709826fbe33946ed0bdf678a3850273613981db4cc92d022cfeee1a81e9234`
`font_02_sfnt_off0001493d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1493D	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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