PDF malware analysis — malicious · d01823d1c675131d

MALICIOUS

PDF

82.6 KB Created: 2021-04-01 09:10:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 0ae5ddeacf4b891aae84b26636a028c4 SHA-1: 921fa4e3fc3c9e1cd262e58cd33ce112b36db9ac SHA-256: d01823d1c675131dc55e80a4a9886da7a2984a2335ed8e369987de68ff2d236e

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://fokemale.ru/123?utm_term=guocoland+annual+report+2016 PDF link annotation
- https://bosamekuxukis.weebly.com/uploads/1/3/4/6/134672370/5705565.pdfIn PDF document text
- http://bovewitavivebu.getenjoyment.net/fuxuvonitaduvokowuxof.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379486/normal_60418bd1a779e.pdfIn PDF document text
- http://mifudubesesul.iblogger.org/24641249914.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4372721/normal_5fc9f8b47ebbf.pdfIn PDF document text
- http://gitikirazidapi.medianewsonline.com/kipitegovedamoki.pdfIn PDF document text
- https://neruzubegakakew.weebly.com/uploads/1/3/4/0/134017499/8917282.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4483104/normal_6060e1293b680.pdfIn PDF document text
- http://wudazex.sportsontheweb.net/geometric_optics_lenses.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4445534/normal_5fe083bf9713d.pdfIn PDF document text
- https://xufetujada.weebly.com/uploads/1/3/4/7/134745175/rodewutumiraw_sewovubiwun.pdfIn PDF document text
- http://ferabugajefelam.mypressonline.com/world_breastfeeding_week_report.pdfIn PDF document text
- http://xekedibu.iblogger.org/algebra_2_solving_equations.pdfIn PDF document text
- http://wekabamile.22web.org/fatazilola.pdfIn PDF document text
- http://zerudomafiko.iblogger.org/effective_communication_in_business_ancient_heritage.pdfIn PDF document text
- http://fedexonep.mypressonline.com/l_adjectif_qualificatif_pithte_et_attribut_exercices_corrigs.pdfIn PDF document text
- http://faguraso.22web.org/wevamobedoxirex.pdfIn PDF document text
- http://sivadozulov.iblogger.org/basic_grammar_test_with_answers.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/zeworibuzoza/setibugi.pdfIn PDF document text
- http://xuxerikafirin.epizy.com/speaking_recent_actual_test.pdfIn PDF document text
- https://s3.amazonaws.com/nitajosasa/zirinuwe.pdfIn PDF document text
- http://nimetegukixiz.rf.gd/98137149913.pdfIn PDF document text
- https://s3.amazonaws.com/diwitapezu/hes_here_eddie_james_lyrics.pdfIn PDF document text
- http://fawalexigin.epizy.com/lumb_jones_veterinary_anesthesia_and_analgesia.pdfIn PDF document text
- https://s3.amazonaws.com/sugosubexez/autodesk_maya_2013_shortcut_keys.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_off0000f476.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF476	4016 bytes
SHA-256: `7a7116e480a6c6bcbcf0dd66cb6e0ff0cc859946c6c9ebcc22f43016d8a96997`
`font_01_sfnt_off000102a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102A9	5400 bytes
SHA-256: `a0a2c51f7736ec454df737a115f9ba13016e9e31afcbbccd609354ffffc9a364`
`font_02_sfnt_off0001151c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1151C	11652 bytes
SHA-256: `d81320f57322ba4cb741d260a9a7fb06fad9edd16484b1c035a408f78431ed10`

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