PDF malware analysis — malicious · 9a9c49cdf9bf7c55

MALICIOUS

PDF

80.1 KB Created: 2021-03-29 08:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3d657d3faa1f17c8b39d9252fa4eddd4 SHA-1: 76b4fb5363d4432b5c3544df200f21cd0853b969 SHA-256: 9a9c49cdf9bf7c55b28e7403a2acdcf242327210bbb0976b8408520da34989fe

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains embedded URLs, one of which is used in a search query lure for software downloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the presence of external URIs and the overall detection profile suggest the document is designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://nipisod.ru/wix?keyword=microsoft+lync+2010+download+64+bit+windows+10
- https://rajuwirorevub.weebly.com/uploads/1/3/5/3/135306937/xisiziwuvagu-zebaleginasad.pdf
- http://chambreapp.xyz/getoniwasozifovurimixoppz9k.pdf
- http://tuwasukam.getenjoyment.net/47090321234.pdf
- http://homearfes.com/on_the_sidewalk_bleeding_evan_hunter_analysisiuj79.pdf
- https://cdn.sqhk.co/dudexobexine/jbiciih/sixolo.pdf
- https://cdn.sqhk.co/lofujumixas/icSgjgh/samsung_music_dark_mode_apk.pdf
- https://cdn.sqhk.co/mitejapeki/iavgfhi/zarekarebumaj.pdf
- http://kijofizovurisos.medianewsonline.com/tofagebamekubavuxuput.pdf
- https://pasazobunev.weebly.com/uploads/1/3/4/6/134670772/sokavadet_kogexudas_rerorijifalo.pdf
- https://rewiwuzaziba.weebly.com/uploads/1/3/5/9/135959403/wuxufakuf.pdf
- https://buritozube.weebly.com/uploads/1/3/0/7/130775753/zumibu.pdf
- http://zagozogenef.sportsontheweb.net/adverbs_examples.pdf
- https://cdn.sqhk.co/xazakamugi/m2gfabg/asking_for_approval_via_email_template.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://juzapurul.onlinewebshop.net/configuring_active_directory_certificate_services.pdf
- http://lugimeviguv.myartsonline.com/axiom_61_midi_driver.pdf
- https://s3.amazonaws.com/jexijer/kumavovuj.pdf
- https://s3.amazonaws.com/retisovojor/75953118003.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f69a.bin` `4931845becc276e18f2e76f9658aa432e8a7b5402c3ef0891090c852aa263ed0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF69A	5920 bytes
`font_01_sfnt_off00010af1.bin` `3161fdeb91fc5f7b47797d998ae4f7d4c05f7c077b08e81bdcd73bf948762698`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10AF1	11080 bytes

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