Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c41e966d266f874…

MALICIOUS

PDF

80.5 KB Created: 2021-05-07 15:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c409dbeeac3b8473a6489cc23391edd7 SHA-1: 5cc00bff57ec057800c78fdd4176ea9a008f2464 SHA-256: 0c41e966d266f87439aafd7055f18a8eb1dc671b50d8ba25c841213340a8bfa1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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://jacksth.ru/strik?utm_term=the+seven+spirits+of+god+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426966/normal_5fffd77337dd2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446286/normal_5fdf1de810458.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://disukikobofug.22web.org/jezadolawaza.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/sagebipomexhvs7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380230/normal_604e61f80a220.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/ebf5_secret_codes8ysrs.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://f07eb630-23ff-4298-a1df-d7940f1ba2dc.filesusr.com/ugd/097a5b_b595d3ac08c0484c9661a35b013a71d4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/91233271119.pdfIn PDF document text
    • http://rubujizuz.epizy.com/defud.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/george_foreman_smokeless_grill_and_panini.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/rovazeve.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/visiting_card_format.pdfIn PDF document text
    • https://6ddb26ad-aa8e-4a3e-a925-5cef6fc035e1.filesusr.com/ugd/d3d820_babb7647d9a6463c8b279858a32b0d50.pdf?index=trueIn PDF document text
    • https://3857ddc0-2b33-46ba-b4a8-ebef9b167687.filesusr.com/ugd/5cc0d5_de37fc3b1ea04e1ab2039dccded28fb6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/hundreds_chart_jigsaw_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/australian_formal_dress_companies.pdfIn PDF document text
    • http://tafikepuvanotu.epizy.com/blackmart_alpha_apk_free_for_android.pdfIn PDF document text
    • https://b1706aec-e9b1-4c6c-9a93-f14ef4a1c402.filesusr.com/ugd/3b47cb_a1897e0320354d4db5bf581e93114b45.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/lagoranuxupuvuropovusax.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/thule_bike_rack_instructions_suv.pdfIn PDF document text
    • http://dumevurofif.rf.gd/xanawusaru.pdfIn PDF document text
    • https://d4078116-a2d5-466f-97e6-20d899f6ca30.filesusr.com/ugd/576447_f3d66bc83c954d4eb3b65d623fcb949d.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9E 5192 bytes
SHA-256: 50ce2a715be04963b7ba54180deafc4d5dbfc1cc4936a731e72673dae1cc026d
font_01_sfnt_off0001004f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1004F 10608 bytes
SHA-256: 6200a71ee206251946bcbcd67ff711f1be3c88d121f07ff0f67127ebb2c99de0
font_02_sfnt_off000124a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A2 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.