PDF malware analysis — malicious · 69f636c4035b5b61

MALICIOUS

PDF

71.5 KB Created: 2020-11-17 18:27:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: d89bb512b70e009350387d7bf037f13e SHA-1: e714f8107240a212847acb7f0f6af45ae4fc378c SHA-256: 69f636c4035b5b617874b060ca3b358bd823f00bb6b5875c7f0c9aedafb4ac1d

254 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, many of which point to a redirector URL (traffine.ru) that is flagged as malicious. The document body, though heavily obfuscated, appears to reference a 'Panasonic cordless phone manual', suggesting a lure to trick users into clicking the malicious links. The presence of a link farm and the ML classifier's high confidence score further support a malicious intent, likely for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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 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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://traffine.ru/123?utm_term=panasonic+cordless+phone+manual+kx-tgea20 In PDF document text
- https://maxuvejalova.weebly.com/uploads/1/3/4/2/134265339/1912388.pdfIn PDF document text
- https://gemamiji.weebly.com/uploads/1/3/4/3/134372226/padimariko_mobodiviwip.pdfIn PDF document text
- https://vaxurubezinijor.weebly.com/uploads/1/3/4/6/134690270/8164760.pdfIn PDF document text
- https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/ragizipusal.pdfIn PDF document text
- https://povelelowu.weebly.com/uploads/1/3/4/3/134331265/wobir_memedudamixa.pdfIn PDF document text
- https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/diwasi.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://s3.amazonaws.com/mejigavukolu/89538500761.pdfIn PDF document text
- https://s3.amazonaws.com/titugome/the_darkest_minds_google_drive.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4e5080b5-4e20-4949-b237-156fcfd08dc5/bosiradurikivefinubiduxaz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f2c7f799-518d-4c10-be50-1c0f6ae6b5ac/burivimonubi.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/7358549020.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/51a9cd78-ba18-4550-b2a3-7c0afae9914f/48477866037.pdfIn PDF document text
- https://s3.amazonaws.com/tawosutosuxi/taylorsville_elementary_school_georgia.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/06ad9b75-6133-4e7d-9455-e37243719525/bokiveniri.pdfIn PDF document text
- https://s3.amazonaws.com/batiku/mogibi.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_off0000ca11.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA11	5808 bytes
SHA-256: `827f39c7e14d836911f5027691be6f0e695c54c367d71001930b04deaeed4bec`
`font_01_sfnt_off0000dda7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDA7	10908 bytes
SHA-256: `e15b46fdfe357c9dbdc4c76b8d0ec9fda8753eec3e3c3153acda91a81a4e03cf`
`font_02_sfnt_off000102f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102F3	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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