PDF malware analysis — malicious · fd2248f06a079366

MALICIOUS

PDF

79.6 KB Created: 2021-06-01 11:15:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: e788286df44f963e31f974d1d2cd724a SHA-1: b9a179eee44068b3bccb11df06f8f9a0d4926d44 SHA-256: fd2248f06a079366df2082425abc588fa8a85ecfe2da600a212bd92558e3ee41

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of external links, many pointing to disposable hosting, indicating a link farm or phishing operation. The presence of a 'utm_term' parameter in one URL suggests tracking for marketing or malicious campaigns. ClamAV and ML classifiers confirm its malicious nature, classifying it as a phishing trojan.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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.
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.
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://pixomot.ru/pbw?utm_term=ear+hack+mod+apk+roblox PDF link annotation
- https://bapuporodotuxo.weebly.com/uploads/1/3/1/3/131381531/118873.pdfIn PDF document text
- https://mifimixaxenerut.weebly.com/uploads/1/3/3/9/133999571/af4c7421e1addea.pdfIn PDF document text
- https://togajakuro.weebly.com/uploads/1/3/1/4/131409127/zekoraxagog-rekomalivelubix-womukime-wupalowuxesi.pdfIn PDF document text
- https://funebaxap.weebly.com/uploads/1/3/4/3/134399245/1035798.pdfIn PDF document text
- https://dobizonetalede.weebly.com/uploads/1/3/5/3/135394553/43c31ff.pdfIn PDF document text
- https://pokifuduxorimib.weebly.com/uploads/1/3/4/5/134501468/dazikapogiti.pdfIn PDF document text
- https://bizitaninajoki.weebly.com/uploads/1/3/5/3/135316521/f942d462.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://uploads.strikinglycdn.com/files/fcb644e8-7ed7-48e5-9b4d-a82f17891b68/85720851405.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3417d36b-a505-4996-8d78-a717532c94b9/21_day_challenge_meal_plan_south_africa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d8c36aa2-5753-4594-9a53-fc64c3b096fe/zexeramifux.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/89a78c35-dadd-4ad7-9f1e-a3c56ccbf554/22988486915.pdfIn PDF document text
- http://sajateves.pbworks.com/w/file/fetch/144441957/48559387100.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7bd800bd-7ebe-4076-ab9c-68e7c5a6d513/rewuguwagas.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eea5ec44-7ed7-473a-babb-f5d58eae2549/tenifosijekukibel.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1775789a-4049-4edb-b820-2ccd2865f5e4/81146182128.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/112139ba-36a1-41af-86d6-21b78a993785/craftsman_5hp_chipper_shredder_review.pdfIn PDF document text
- http://kiletejude.pbworks.com/w/file/fetch/144425703/simple_request_letter_sample.pdfIn PDF document text
- http://jujirafamena.pbworks.com/f/22600416322.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_off0000ed6c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED6C	4800 bytes
SHA-256: `d31901aa77c3bc59d693922c2cd4b373c6e55567090daf05a0201c468f60934f`
`font_01_sfnt_off0000fda0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFDA0	10944 bytes
SHA-256: `79343d0c574d27314d0c06ba992f29469e188d27bb3827ecc8ee335545fc462d`
`font_02_sfnt_off00012317.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12317	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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