PDF malware analysis — malicious · db27f1145b1381fb

MALICIOUS

PDF

85.6 KB Created: 2021-05-23 20:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: a2887fa349ffaed409fe05fe1c52e94f SHA-1: a78e03f7f4715100de46abc907473033d041811b SHA-256: db27f1145b1381fb06627d3d2b66fa84fee5b563e55b5eefeb82f195605a4e4e

196 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 password-protected-archive 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 0.9991

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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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://jumiwimov.ru/strik?utm_term=download+bandicam+full+crack+tanpa+watermark+gratis PDF link annotation
- https://vaseviga.weebly.com/uploads/1/3/3/9/133986607/988071a6c.pdfIn PDF document text
- https://pudiwozi.weebly.com/uploads/1/3/4/5/134510484/f3c26e93314c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408863/normal_6001c6cf2aed3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478123/normal_6016d9843ed64.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4425910/normal_5ff906f06b0a7.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4482618/normal_5fe0203baa2f8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402960/normal_5fe692715ea10.pdfIn PDF document text
- https://labivuzixifazer.weebly.com/uploads/1/3/4/3/134310915/ec2fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386347/normal_60410581e0012.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4421051/normal_6001030229f41.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383704/normal_603b9f565c13d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412761/normal_6046e17d7b5ad.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/jeworurowam/best_fps_android_games_offline.pdfIn PDF document text
- https://s3.amazonaws.com/tuxalowafokuvo/topoma.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9f82aed7-ecb8-4d8f-aaa2-b0fb4befeb2a/79770996865.pdfIn PDF document text
- https://s3.amazonaws.com/lepefi/fofakusodutubanazolosirez.pdfIn PDF document text
- https://s3.amazonaws.com/gomaxod/80894190442.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3894300d-c8e5-41c8-b886-b1724e59957b/dance_hit_songs_hindi.pdfIn PDF document text
- https://s3.amazonaws.com/vuterijoze/pewirigabakowusogateg.pdfIn PDF document text
- https://s3.amazonaws.com/kavugusepe/22149390516.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a603d6f1-932e-453b-986f-fb9f1688ea1a/troy_bilt_power_washer_parts_near_me.pdfIn PDF document text
- https://s3.amazonaws.com/vavale/3953991337.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2605afd3-604e-4717-8ebd-53a57c1ab4ae/fojupilaviwubawufikob.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f34a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF34A	5768 bytes
SHA-256: `33cd8c33c3a58d35714a1b400582792066d309f238d9c0c34e7a9275c8755a99`
`font_01_sfnt_off000106f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x106F3	11580 bytes
SHA-256: `2f6fe3f496edaa8b9cebbb30011a719b5e8b555f29d8da7c6ccbca92d55cb721`
`font_02_sfnt_off00012db2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12DB2	17112 bytes
SHA-256: `f9dc15b9e7e1a45eeec377706f6e9859ce73b6054018bdf95ecdbdcfaa16ab0e`

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