PDF malware analysis — malicious · 0ea4db05ce7f82bf

MALICIOUS

PDF

83.0 KB Created: 2021-03-12 05:28:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 2818f5d151fbb91502c44e4925dafd35 SHA-1: ca4596b4f46be3e042492bdbe0855a4603017b59 SHA-256: 0ea4db05ce7f82bff6c1e4665e650c7f771ae49dca1eb7a97b2b2c7ec059b585

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 redirectors 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 malicious document designed to redirect users to harmful sites.

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
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/award?keyword=uml+diagrams+for+banking+system+pdf In PDF document text
- https://nebegixemavo.weebly.com/uploads/1/3/4/3/134359619/foragokaf-zusuferapoje-woximakekazifa.pdfIn PDF document text
- https://munuteme.weebly.com/uploads/1/3/4/8/134862418/desesug.pdfIn PDF document text
- https://rurezakofone.weebly.com/uploads/1/3/1/1/131163981/xanozipiruzujupot.pdfIn PDF document text
- https://patakobenidirok.weebly.com/uploads/1/3/0/7/130775678/7540051.pdfIn PDF document text
- http://nopubejojawe.22web.org/army_cadet_badge_placement_uniform.pdfIn PDF document text
- http://japavizifovot.22web.org/bizofolidonutiva.pdfIn PDF document text
- https://vobudogekatobef.weebly.com/uploads/1/3/0/8/130874620/7688305.pdfIn PDF document text
- https://dejatenuti.weebly.com/uploads/1/3/5/3/135348415/e6961.pdfIn PDF document text
- https://zaxizibu.weebly.com/uploads/1/3/4/6/134672664/wararesekazeg.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://wovikoverule.epizy.com/the_historical_figure_of_jesus_ep_sanders.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c6540b5b-b581-4895-92de-761ee87c6e1a/xitevufux.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/410ef88a-0613-4236-be82-9c311f9f789f/18424442487.pdfIn PDF document text
- http://tovumenigoge.rf.gd/cateter_venoso_periferico_calibres.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b4a740ff-f8a8-4543-839f-5bbbfc64f2ca/gukotomataf.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/59cdedbe-f0b7-49ea-82ba-4c8c7090a1f7/dixoxizigebogususemitifa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/efdc9ba3-5d8c-4399-b634-5650aa3bd026/71254049095.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2d03d6d8-7a19-4826-960b-5f729324a1c4/638933318.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/833ce1b7-abf8-43fb-8304-590969a25275/bikezuwitujepegi.pdfIn PDF document text
- http://rizaraj.rf.gd/rarib.pdfIn PDF document text
- http://fukedega.epizy.com/how_do_you_set_security_lights.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_off0000fbc1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBC1	5448 bytes
SHA-256: `fef6458c5322bb7a5dbcb285865134f3959af37842753e83b9f42a04250afb30`
`font_01_sfnt_off00010e2d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E2D	10000 bytes
SHA-256: `c2e4dcf252804534791f99b639a3787f48eb2931fc7497324302c91a351ab6a9`
`font_02_sfnt_off00013068.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13068	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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