PDF malware analysis — malicious · 9ea0d5e989ec3b34

MALICIOUS

PDF

93.7 KB Created: 2021-06-10 02:41:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 9438fa58647bde7e4b3032bea93ea04c SHA-1: 27b0dfa2131a0ad7b11a2b10fccbdeeb4830e5a9 SHA-256: 9ea0d5e989ec3b348b9debe516af2eb30b917de20d0afbf3378b4b5ee7f13be4

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many pointing to disposable hosting services, and is flagged by ML classifiers and ClamAV as malicious phishing content. The primary URL, 'https://catamma.ru/pbw?utm_term=new+twilight+movie+2019+midnight+sun', suggests a lure related to the Twilight movie franchise to entice users to click on malicious links. No scripts were extracted, but the PDF structure and URL distribution strongly indicate a phishing or link-farming attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://catamma.ru/pbw?utm_term=new+twilight+movie+2019+midnight+sun PDF link annotation
- https://nudijezomuxu.weebly.com/uploads/1/3/4/3/134377325/bowewepixom.pdfIn PDF document text
- https://pavonaxasove.weebly.com/uploads/1/3/5/3/135310158/patafetiwakuwoluna.pdfIn PDF document text
- https://jamofidomub.weebly.com/uploads/1/3/1/3/131398059/mesat-nexaribib-xitisorakave-bawatomaloli.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4412413/normal_5fd04df4b76d3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4365608/normal_5fdd47a1cfd66.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411917/normal_60404e0f0a128.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://rugewenuzed.pbworks.com/f/la_soledad_de_un_cuerpo_acostumbrado_a_la_herida_poemas.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/69cdac61-30c9-410c-800c-24f4c94c9bd7/96477010132.pdfIn PDF document text
- http://zepupifob.pbworks.com/f/94712698531.pdfIn PDF document text
- http://lipemuv.pbworks.com/w/file/fetch/144841926/45598690168.pdfIn PDF document text
- http://zolunegoli.pbworks.com/f/sirifefo.pdfIn PDF document text
- http://disisopaz.pbworks.com/f/vonuxilijoneg.pdfIn PDF document text
- http://zorisomofi.pbworks.com/f/62339287991.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/540e7413-2dac-4d9a-9610-37faf4273fa2/60081524070.pdfIn PDF document text
- http://fepewuwakow.pbworks.com/w/file/fetch/144794661/40106445943.pdfIn PDF document text
- http://mapaduzipi.pbworks.com/w/file/fetch/144496929/free_accident_report_vin_check.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/04ae37e2-ce0a-4f28-9e8c-6f3be8748015/ryobi_ts1342_change_blade.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/037cdd57-b6b1-4db0-9b93-54e35a8cb9f7/how_do_i_use_my_phone_as_a_roku_remote.pdfIn PDF document text
- http://tujedet.pbworks.com/f/96976440895.pdfIn PDF document text
- http://sekodegaxex.pbworks.com/w/file/fetch/144750588/babikilaveniwof.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a627079a-3754-4289-9738-d336d5994c0c/880167698.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_off00012085.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12085	5416 bytes
SHA-256: `2fb761968819f13badf9481b2ced620c0ed0cb1c8d0e38f91d14a5e9d7e3b06d`
`font_01_sfnt_off000132f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x132F8	11324 bytes
SHA-256: `4b64f1d3c3223666c9d46975590fc4e66a12038eb981fd9979300b5818626117`
`font_02_sfnt_off000159a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x159A8	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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