PDF malware analysis — malicious · 2cf35a7dd5b40bc2

MALICIOUS

PDF

78.2 KB Created: 2021-03-07 08:38:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25

MD5: 68d6694bb2b330ed8b9937f0f4baba34 SHA-1: d356e8f21df042808404d058aa6c1be1c1fa4108 SHA-256: 2cf35a7dd5b40bc2bd4eb985dadb5be08fd785f515331a3f6a12ed87168d6966

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to known malicious redirector infrastructure and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a lure to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://yafferge.ru/wix?keyword=premiere+pro+this+effect+requires+gpu+acceleration+mac In PDF document text
- http://academic-club.ru/92647371982ax4qv.pdfIn PDF document text
- https://moliveje.weebly.com/uploads/1/3/5/3/135323163/tapekus-revivibulaxage-remil.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368495/normal_5fc8508863830.pdfIn PDF document text
- http://zomaragexavope.sportsontheweb.net/nisajo.pdfIn PDF document text
- https://talekadibozevo.weebly.com/uploads/1/3/5/3/135393667/paxoj-wujamesawi-witiburaniga.pdfIn PDF document text
- http://pelistens.xyz/597673859216sgpj.pdfIn PDF document text
- http://mexicotop.xyz/livuxiwejidegzjqoy.pdfIn PDF document text
- http://docita.fun/zorakipanuroti2a3m.pdfIn PDF document text
- https://kuxijixa.weebly.com/uploads/1/3/4/8/134856984/litesibub.pdfIn PDF document text
- http://getporte.xyz/what_jobs_can_you_get_with_a_computer_engineering_technology_degree0q8fv.pdfIn PDF document text
- https://ledapenilodaro.weebly.com/uploads/1/3/1/0/131070651/zixolosogavo.pdfIn PDF document text
- https://jijixedo.weebly.com/uploads/1/3/1/3/131398351/6501471.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4378425/normal_5ffb905b25fa0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393346/normal_6014ab3a55742.pdfIn PDF document text
- http://meetdouche.xyz/kenmore_he2_plus_washer_control_boardosvhm.pdfIn PDF document text
- http://gdztut.com/410364861688jky7.pdfIn PDF document text
- http://bigmagazin.xyz/how_to_reset_maintenance_required_light_on_1999_honda_accord74vaw.pdfIn PDF document text
- http://lg-copyrightforms.com/vazolozegubox4by2s.pdfIn PDF document text
- http://thiswaytovogue.com/94102220357bu9ow.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402707/normal_601e6217f28e1.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://ratobewiwigu.atwebpages.com/pocket_juice_20000mah_wireless_power_bank.pdfIn PDF document text
- http://bumojomoso.rf.gd/32935861920.pdfIn PDF document text
- http://fididebezewigex.epizy.com/android_studio_project_structure_changed.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_off0000e778.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE778	5440 bytes
SHA-256: `be43c9f34769c1b762488a6c5b17e0c80c9dfd77769eb9738c6ebc6c0848ed29`
`font_01_sfnt_off0000f9cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9CC	10192 bytes
SHA-256: `53db76c9d9733f76c7617f4c98b503977adfb54886f889eb6a9c8bc270dff870`
`font_02_sfnt_off00011ca8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11CA8	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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