Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c1f7f4e3b919046…

MALICIOUS

PDF

76.1 KB Created: 2021-03-20 14:07:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dddd2786e35f93f815465f34df8df89a SHA-1: 81106ee01c0170cca21e858a310da219e650f25e SHA-256: 8c1f7f4e3b9190460cf2e6914590ef0ef4e10731796085729ad88830c3e3da9b
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/wix?keyword=adobe+acrobat+crack+ita PDF link annotation
    • http://rasojupalipi.22web.org/accidentally_in_love_kaskus.pdfIn PDF document text
    • https://cdn.sqhk.co/kimazibo/hihf05y/viwaxuzojenejekokugud.pdfIn PDF document text
    • https://kadamoxezegawuf.weebly.com/uploads/1/3/4/3/134347408/bb050.pdfIn PDF document text
    • https://xibatelilon.weebly.com/uploads/1/3/1/6/131637149/4670471.pdfIn PDF document text
    • https://luvegiramoki.weebly.com/uploads/1/3/3/9/133986347/pezerisodiwulifexom.pdfIn PDF document text
    • http://fubewakixodi.22web.org/warm_bodies_movie_online_with_english_subtitles.pdfIn PDF document text
    • https://cdn.sqhk.co/rodesedaded/bLgdKMJ/mezokaxojozilipiluxuduji.pdfIn PDF document text
    • https://cdn.sqhk.co/jidobimatu/8hoibjh/arjun_reddy_movie_in_tamil_isaidub.pdfIn PDF document text
    • https://bojubuloxobepi.weebly.com/uploads/1/3/0/9/130969884/4498208.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxeromewime/hOhbhcv/natewu.pdfIn PDF document text
    • https://cdn.sqhk.co/suwixowefa/q6eijgU/69248678981.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://488c2ff9-9ff4-499e-8f11-525115e20b22.filesusr.com/ugd/8aba0c_8128be5aebe64690804b16480894e280.pdf?index=trueIn PDF document text
    • http://fuzezufomazo.rf.gd/sailor_moon_crystal_english.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/interpreting_linear_graphs_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/beckhoff_ipc_diagnostics.pdfIn PDF document text
    • http://zumaborelap.rf.gd/video_editing_apps_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/photo_album_google_slides_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/how_do_authors_influence_readers.pdfIn PDF document text
    • https://37bcb4aa-7747-4ff6-a352-0e22bf983c21.filesusr.com/ugd/4393d3_0b8ba605355e41f88d55962f35cd0b64.pdf?index=trueIn PDF document text
    • http://faxumev.epizy.com/surface_area_of_complex_shapes_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/88084198617.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFE 4916 bytes
SHA-256: fad3313dc3563f6bde1ccb4416f5f9bfdc84546720c9602ef89aa8eb8cbefd7d
font_01_sfnt_off0000fec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC9 10836 bytes
SHA-256: 4d6e7dd996a01d2c3af8cb726bea6a980f99f956395f50e49fc5ce37f69bf609

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