PDF malware analysis — malicious · c2f1886ef291a35b

MALICIOUS

PDF

71.9 KB Created: 2020-12-19 22:14:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 2fc33cbc26ed9850b53aad4dd10b79dd SHA-1: 1ce9d128c29219b319d3eba5f2ba0756f3ec55c4 SHA-256: c2f1886ef291a35b08c1f41a5e778dec941ad0d73f2749fcc2bc017e60c8e114

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent URL, 'https://trafffi.ru/strik?utm_term=gopro+hero+2018+review', is likely the primary malicious destination. The presence of embedded JavaScript, though not fully detailed, suggests an attempt to execute malicious code or redirect the user. The ClamAV detection and ML classifier further support its malicious nature, pointing towards a phishing or malware distribution scheme.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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 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.
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://trafffi.ru/strik?utm_term=gopro+hero+2018+review PDF link annotation
- https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/zadikadagok.pdfIn PDF document text
- https://nupanirofedodav.weebly.com/uploads/1/3/4/4/134470916/kewedikeder-vemusokodogo-jurobokovidino.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4483349/normal_5fc9dad68b2d7.pdfIn PDF document text
- https://ruzunaxatan.weebly.com/uploads/1/3/4/3/134340268/vepotanaxave.pdfIn PDF document text
- https://nasabera.weebly.com/uploads/1/3/4/4/134447265/3829104.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/petikamov/combine_two_fields_in_crystal_reports.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bbabf2a4-b6c0-4ff2-a941-e77e5e79865d/godox_tt600_manual_espaol.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4087e1b1-c68b-4c57-bf36-714a95e1610c/taroma.pdfIn PDF document text
- https://s3.amazonaws.com/dazuxujepov/rijuwozedizominanekeripaw.pdfIn PDF document text
- https://static1.squarespace.com/static/5fdc9ff03a83d042422c3343/t/5fdcf0181e9daf422118ca09/1608314904371/fatopakofavoxorejudig.pdfIn PDF document text
- https://s3.amazonaws.com/nokiva/biology_objective_questions_and_answers.pdfIn PDF document text
- https://s3.amazonaws.com/dinigugaxej/bc_rich_warlock_revenge.pdfIn PDF document text
- https://s3.amazonaws.com/wujafivabipo/98555515419.pdfIn PDF document text
- https://static1.squarespace.com/static/5fcf6d66d267866a51a2aad9/t/5fd04a0f75f5e504856d51f4/1607485967865/love_stickers_for_whatsapp_emoji_gif_wastickerapps.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_off0000dbc6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBC6	5188 bytes
SHA-256: `409003bfd06fcbe96ce26ee1f810a75e3a757dc520d6b97bba0902950a7fa2b9`
`font_01_sfnt_off0000ed89.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED89	11156 bytes
SHA-256: `01d34979bf931bc3aa725b32e5d7a9473bb7d8dd451c91bbfec6c86dff3b4be2`

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