Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0af818ee7a994e7…

MALICIOUS

PDF

81.5 KB Created: 2021-03-12 15:04:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e13976d8ef0b3feb2b9a477f09231b8d SHA-1: 88d7dc8de98e02af0c969baa3a000158cd83fcdb SHA-256: f0af818ee7a994e7c7abb78252132f18b8c16e49585027e3f540dfeb343a8e8d
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links, with at least one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection further support its malicious nature, flagging it as a phishing or trojan PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=how+does+forex+trading+work+step+by+step In PDF document text
    • http://microbestdigitalmeter.xyz/frigidaire_ffad7033r1_70_pint_white_dehumidifier_canada2hg4r.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/Thigigi/tobanumitakudiralojidi.pdfIn PDF document text
    • http://pe50off.pro/4400747102695wo4.pdfIn PDF document text
    • http://fulokixowo.scienceontheweb.net/vutiwifasikijavoxanodor.pdfIn PDF document text
    • http://zazorin.scienceontheweb.net/37387908446.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/egg37he/chevrolet_spark_2017_manual.pdfIn PDF document text
    • http://begdas.fun/public_speaking_training_melbourneg1d3f.pdfIn PDF document text
    • http://pristav.pro/samsung_galaxy_s5_mini_camera_failedpmz7p.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumirapeb/aoMm77i/45018022727.pdfIn PDF document text
    • https://cdn.sqhk.co/sozovoja/5ngde6N/ducks_basketball_schedule.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/tapogaxunevofo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b304dada-1952-41b2-af44-d16a3232bb3f.filesusr.com/ugd/c19c34_3c664b7835ec408680f071c949c606f7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/nekafagajuvodekibofuzige.pdfIn PDF document text
    • http://rojanesifilagu.myartsonline.com/487821181.pdfIn PDF document text
    • https://c8070bf9-ed42-4c5d-8eb8-ca35ee70f136.filesusr.com/ugd/d38238_d451b791bf094021b9ac389094757587.pdf?index=trueIn PDF document text
    • https://8dac4d01-2cd1-45d2-8b5f-6005f802adc9.filesusr.com/ugd/1f96ce_01c3bb463f1d41d49b70110fc95d2f23.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tomaxade/usda_corn_crop_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/98381586675.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/wudefiloguxaxideburatizef.pdfIn PDF document text
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_5a37e588ad7e4c61bd1bd291d6ec21be.pdf?index=trueIn PDF document text
    • http://palelezugob.onlinewebshop.net/70136758929.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/chachitos_cereal_informacion_nutricional.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/79527980204.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/sobukimezukuto.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/pelutapuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/hooded_ski_jacket_crossword_answer.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_off0000fff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF5 5604 bytes
SHA-256: 7801f33c817ca5e9af924720edc494558b1a8567069406778874ddfe73cf5998
font_01_sfnt_off00011336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11336 10844 bytes
SHA-256: f9eb827df2c7b9017b47fafe0aa378a375f92021987792891a3a48341a6e60f4

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