PDF malware analysis — malicious · 8e7972193d0ba87e

MALICIOUS

PDF

79.6 KB Created: 2021-03-31 22:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: a13984067c40862cf787ebc1a07facc7 SHA-1: 153bca8a2f7d88cde4a5450ec8420037e42bd137 SHA-256: 8e7972193d0ba87ed4a9f9637e51f67b1ea7e8bb9c93bc330bbc7ca14134df5e

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm for SEO manipulation or to host malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and heuristic firings point to a malicious document designed to redirect users to potentially harmful external resources.

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 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.
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://seumenha.ru/award?keyword=mso+001+sociological+theories+and+concepts+pdf PDF link annotation
- https://tixusevonatafix.weebly.com/uploads/1/3/4/6/134611731/943675.pdfIn PDF document text
- http://barajofa.mywebcommunity.org/83422705810.pdfIn PDF document text
- https://vimexizud.weebly.com/uploads/1/3/4/7/134755563/mowivage-kolibax.pdfIn PDF document text
- https://tipolapuponawog.weebly.com/uploads/1/3/2/6/132696210/savexemedamafatajuwo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420434/normal_5fda3a53e245a.pdfIn PDF document text
- http://lunatan.medianewsonline.com/93098837865.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4393889/normal_5ffc3723a1038.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380680/normal_604de359f0a48.pdfIn PDF document text
- http://woronari.getenjoyment.net/acuerdos_de_basilea_1_2_y_3.pdfIn PDF document text
- http://jisuvakuwiraza.medianewsonline.com/concepto_de_trastorno_alimenticio.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://29bb9f0a-cb36-4278-8b1c-05d86a2267e4.filesusr.com/ugd/25e746_b08dee1fac144b7a9a3a1cb9bd5a496d.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xefejevife/bazimoreninonomu.pdfIn PDF document text
- https://29fa80ab-3b21-46a5-a5c9-66d7a3d84e9c.filesusr.com/ugd/eb9fb8_7bd92f182c584fc88ac78f5dbd8bb423.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/juzowilipi/41828854790.pdfIn PDF document text
- https://s3.amazonaws.com/vososasoxumete/annals_of_oncology_submission_guidelines.pdfIn PDF document text
- https://s3.amazonaws.com/wixanarer/ledizozadebabo.pdfIn PDF document text
- https://s3.amazonaws.com/wenobagupexekap/focusrite_scarlett_solo_driver_windows.pdfIn PDF document text
- https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_ca2419180bcd4632b92fe4e76a7e3e09.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/juvetaso/best_travel_guide_to_andalucia.pdfIn PDF document text
- https://s3.amazonaws.com/legobegutulo/apple_preview_add_text_to.pdfIn PDF document text
- https://s3.amazonaws.com/zuvovoxigumuz/14564343278.pdfIn PDF document text
- https://s3.amazonaws.com/navoburarovada/panchatantra_kannada_movie_audio_song_free.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_off0000e47f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE47F	5616 bytes
SHA-256: `f7154432d0d36878d5a13a69a99c17d64773822ff9e6a4938803a343a242aeb8`
`font_01_sfnt_off0000f7a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7A4	11568 bytes
SHA-256: `2024962c37ea5d37c637eaa3a71007734149975d4d9639329a099b4a2bca3a32`
`font_02_sfnt_off00011f20.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F20	4628 bytes
SHA-256: `89543cbc9f83764dfc46c1c98d11702da8af363cb4af01489de8f1857ec02cb7`

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