Malicious PDF — malware analysis report

Static analysis result for SHA-256 440051264f1223f8…

MALICIOUS

PDF

70.9 KB Created: 2021-05-14 00:00:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9662ce1e8990300a286b7325eee294d5 SHA-1: 12c6d22b7e2036c8c882f2dcd510607b95b4cd24 SHA-256: 440051264f1223f8e47a46d560d433e87a71493e398857e88536ede0a71a2cf0
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-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.
  • 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://gimoguvi.ru/strik?utm_term=arby%2527s+menu+turkey+bacon+ranch PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415519/normal_5ffb4bfe29df9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475209/normal_6027f65df3f89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468551/normal_6059c26836c77.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487201/normal_5feb00d350dcd.pdfIn PDF document text
    • http://cyberlife.store/carlcare_uganda_jobsqpl7k.pdfIn PDF document text
    • http://geosen.net/28823198318epwvz.pdfIn PDF document text
    • http://ukranews.icu/bart_vs_the_space_mutantsdl69b.pdfIn PDF document text
    • http://hot-money.fun/dewalt_3800_psi_pressure_washer_diagram9228j.pdfIn PDF document text
    • http://pokupka.space/95387999552krva7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452839/normal_5ffded9892e09.pdfIn PDF document text
    • http://openchambre.xyz/56038976190zsft7.pdfIn PDF document text
    • http://lg-copyrightforms.com/2006_nissan_altima_transmission_fluid_levele51ou.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://709e7e89-b264-4d73-b757-064736ed86f1.filesusr.com/ugd/f523c3_44cc0371757c43dc84a7a6c8c545aef8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/divikufifir/araketu_discografia_completa.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/maserati_quattroporte_gts_2020_review.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/video_game_designer_resume_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/somewhere_over_the_rainbow_israel_lyrics_and_chords.pdfIn PDF document text
    • https://f3dcd8e3-6656-4b47-a81e-a993d3c4f2a1.filesusr.com/ugd/aa9ef2_e92ef11b3a7f4e96ad62c0cb655e59f3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/information_about_france_army.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/simisojupegi.pdfIn PDF document text
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_56ef49c6c618426ebb46773fbfd9d201.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/83428151599.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/bible_by_life_church.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63D 5336 bytes
SHA-256: 0d1ef4f5170a075db5589971271994689ae1317dc1baa259775655b617aadbd5
font_01_sfnt_off0000e847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE847 10596 bytes
SHA-256: ada0d395f47bb214ee52d9b7b60c8be0d939fdafe1334b9231538ca1e50367d6

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