PDF malware analysis — malicious · 8677c33b698849e8

MALICIOUS

PDF

77.2 KB Created: 2021-03-08 21:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 97a4b3ee02007e608251b4a2f30d9863 SHA-1: 5d542c5c6070692aa0c4ffc7aaa4995eed029062 SHA-256: 8677c33b698849e88022595e101c4e6596eec9967d9f6643e6fef13a555d48ed

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to contain metadata related to a product, suggesting a lure to disguise the malicious intent of directing users to external URLs. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

Heuristics 5

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.
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://botokaw.ru/strik?utm_term=fender+passport+mini+7+watt+portable+pa+system PDF link annotation
- http://veruvipavopa.getenjoyment.net/the_merry_adventures_of_robin_hood_chapter_4_summary.pdfIn PDF document text
- https://cdn.sqhk.co/wadusazilox/hdqhg8f/word_stacks_level_1558_answers.pdfIn PDF document text
- http://mikazuxo.mypressonline.com/vesiwabazifusilozivop.pdfIn PDF document text
- http://xomutukegadoj.mypressonline.com/how_to_do_a_bibliography_in_chicago_manual_style.pdfIn PDF document text
- http://datinge.site/picture_frame_size_guidei3yab.pdfIn PDF document text
- http://jisetatiloro.scienceontheweb.net/enron_scandal_year.pdfIn PDF document text
- https://cdn.sqhk.co/zapimafe/chgt4ug/doporomimive.pdfIn PDF document text
- http://xubaseki.iblogger.org/zoxoj.pdfIn PDF document text
- https://cdn.sqhk.co/vavewiren/clib2gd/moto_rider_games_download.pdfIn PDF document text
- http://fatunatet.getenjoyment.net/wetinelogadozoro.pdfIn PDF document text
- http://vurovolapoza.mygamesonline.org/pupariso.pdfIn PDF document text
- http://zabemaladameg.medianewsonline.com/newurupa.pdfIn PDF document text
- http://birebap.scienceontheweb.net/rulaj.pdfIn PDF document text
- http://english-10.site/mastering_python_regular_expressions_githubhaq9g.pdfIn PDF document text
- http://testvvd.xyz/john_travolta_bubble_boy_images5noka.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
- https://s3.amazonaws.com/xeruxaxer/dreamstation_auto_cpap_provider_manual.pdfIn PDF document text
- http://surobufalinaxis.epizy.com/83189498680.pdfIn PDF document text
- http://ranitirunom.myartsonline.com/watiruworonasizaro.pdfIn PDF document text
- http://zotubune.myartsonline.com/troy_bilt_bronco_riding_mower_carburetor_removal.pdfIn PDF document text
- http://wowadowir.epizy.com/76461760493.pdfIn PDF document text
- https://s3.amazonaws.com/joterige/61788010755.pdfIn PDF document text
- https://s3.amazonaws.com/rejiner/dotolad.pdfIn PDF document text
- https://s3.amazonaws.com/fadedosi/aetna_medical_claim_reimbursement_form.pdfIn PDF document text
- http://vojebijawutirus.rf.gd/wilomaj.pdfIn PDF document text
- http://xediguvodolej.epizy.com/toro_wheel_horse_14-38_hxl_model_71193.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_off0000ded5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDED5	5260 bytes
SHA-256: `dda5911af2a921de8587b3e23f508e812906c867aa96ee5c48e059c55d848476`
`font_01_sfnt_off0000f0ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0AC	11132 bytes
SHA-256: `ea64c94e80dcf44c2c61b29249a0934ca5c007d055440159151c429790f3e909`
`font_02_sfnt_off000116a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x116A8	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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