PDF malware analysis — malicious · 08c900bd90b7d50c

MALICIOUS

PDF

77.1 KB Created: 2021-03-22 06:05:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20

MD5: 0718e4085625517dda2a2c7a22871456 SHA-1: 78e1566a6d9d4d703de16af64d18cadbfa36d2ad SHA-256: 08c900bd90b7d50c781cf8e74875c58a4f1c05ae63eb6a94e9f7a5bab0bd2e84

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs and is flagged by ML and ClamAV as malicious, specifically as a phishing or trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, suggesting an attempt to obscure the true malicious destination. The presence of URLs like 'fokemale.ru' further supports a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9956

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 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://fokemale.ru/123?utm_term=spider+solitaire+free++for+windows PDF link annotation
- https://cdn.sqhk.co/gukisafuw/RjgxAY9/vefujubebetajuvav.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4484999/normal_60222c08f2f8b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4477162/normal_5fd336a2728ae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378393/normal_5fdb95851f35c.pdfIn PDF document text
- https://cdn.sqhk.co/xoxamomajil/frA9K1G/puffin_web_browser_apk_free_download.pdfIn PDF document text
- https://cdn.sqhk.co/waxixojapu/hmgiien/apsrtc_app_apk.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464068/normal_5fe0b94f038fe.pdfIn PDF document text
- http://tazizaj.iblogger.org/attestation_pole_emploi_vierge_remplissable.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4409107/normal_5fefb30b6b775.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476146/normal_603b5d23d851e.pdfIn PDF document text
- http://ravujonawugip.22web.org/motagux.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4461525/normal_5fe046ce00848.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379841/normal_60490ca71637e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366343/normal_600ac792c072c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465938/normal_5fe6feeea8179.pdfIn PDF document text
- http://sukotis.iblogger.org/87311661339.pdfIn PDF document text
- http://sidikapefujuxe.22web.org/44165809521.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/a81fbabf-e753-4c3f-9107-a0d906e72218/41129897783.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3c5eeee5-f46d-465f-bd12-a62597fd9217/how_to_go_from_factored_form_to_standard_form.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c7dc8b9e-7f90-4736-a512-7fcbe4a79467/political_philosophy_the_essential_texts.pdfIn PDF document text
- http://litekedewiv.rf.gd/2008_jeep_wrangler_unlimited_x_sport_utility_4d_interior.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3bd9d843-00bf-4a01-9e20-f2d0ab547de6/wetob.pdfIn PDF document text
- http://lilufunom.epizy.com/7676892295.pdfIn PDF document text
- http://lawazujazigefon.epizy.com/luvejataxafuwiguvexusi.pdfIn PDF document text
- http://monejorudazan.epizy.com/22326346730.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b0ff1a46-93f8-491d-8933-175511a6a096/32961137645.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_off0000ec00.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC00	5232 bytes
SHA-256: `c903a19e287194328520e8d778612520515fef4f35c15c729724f51fd5dc014c`
`font_01_sfnt_off0000fdeb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFDEB	11528 bytes
SHA-256: `860da060773b990337cf9d6e5c5d3ef3df1bf7aa359354e599e2abbe50ba6644`

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