PDF malware analysis — malicious · fd1ea229b0dda006

MALICIOUS

PDF

77.5 KB Created: 2021-03-23 05:24:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: 04c9ebb6b09a50ae7c6b260d1a1b39e9 SHA-1: dbdbde57fe2618453b29e3e26ffca4898bbc47de SHA-256: fd1ea229b0dda006448e5800ee46b0ba55aea79d79eb65f23175f75a5f7a433b

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains numerous embedded URLs and a heuristic identified a 'download button' lure, suggesting the document's purpose is to trick the user into clicking a link. The presence of external URIs and a link farm heuristic further supports a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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 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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://pelibifir.ru/award?keyword=ocr+convert+pdf+to+word+or+image+to+text PDF link annotation
- http://zutatowatipo.mywebcommunity.org/zibebi.pdfIn PDF document text
- http://huaweistoreukr.xyz/93761274238rwfwh.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409248/normal_604073227ca60.pdfIn PDF document text
- https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/famelebex-mifixinogijuf-wadolasaxux.pdfIn PDF document text
- http://newser.site/hnefatafl_game_piecesxyr3g.pdfIn PDF document text
- http://autolombardpro.ru/which_stock_broker_is_best_in_malaysiarzl6r.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490754/normal_6014711516cf2.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4453747/normal_5fcd9d6d10faa.pdfIn PDF document text
- https://cdn.sqhk.co/zodozane/aLjaGLJ/xirivifigatigurixevem.pdfIn PDF document text
- https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/92544a.pdfIn PDF document text
- https://rigawegafo.weebly.com/uploads/1/3/4/5/134587157/dolive.pdfIn PDF document text
- http://medtechnika1.ru/action_linking_and_helping_verbs_quizz3dmr.pdfIn PDF document text
- https://nukafubesogu.weebly.com/uploads/1/3/4/4/134463640/5293682.pdfIn PDF document text
- http://nout-prokat.website/210805608034rhv9.pdfIn PDF document text
- https://jabuzowe.weebly.com/uploads/1/3/4/3/134312688/62fb42fa.pdfIn PDF document text
- https://cdn.sqhk.co/pirujezexod/fIGfigD/18137800776.pdfIn PDF document text
- https://cdn.sqhk.co/soxemudu/VdMhfap/bodo_full_movie.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4406809/normal_5fcf68a7767ae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488806/normal_5fd8bf8186a13.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://jowawaba.atwebpages.com/spanish_essential_oils_desk_reference_6th_edition_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/09565b04-5c58-4510-ab2f-3bd5410cf9eb/how_to_become_a_ford_certified_technician.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b8179eeb-e206-4307-928f-7718a6ee6cf6/subofijubesebopatiki.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_off0000e491.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE491	5300 bytes
SHA-256: `4d0ca193bdeed88d3ec628c2a2db801f9534e1b956e61c8946411665852b26c4`
`font_01_sfnt_off0000f693.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF693	10504 bytes
SHA-256: `b3940fcf61d241a054a443ab9151dc099f2969ee3e27d6ce5e285800d8898146`
`font_02_sfnt_off00011a91.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A91	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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