Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8fc5da6a0593bd8…

MALICIOUS

PDF

79.8 KB Created: 2021-03-15 12:13:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bf3dfec1afaac701b2b09c69c610adc0 SHA-1: c6d7b1a7daf11627171b02505ce12835cc4d9e22 SHA-256: e8fc5da6a0593bd81552f2c8f39924a957b44b1401b365ce3f39db26458e9cc4
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 0.9990

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://dugedepap.ru/wix?keyword=honeywell+thermostat+class+2+lr1620+manual PDF link annotation
    • http://pusaburuku.22web.org/expense_approval_policy_template.pdfIn PDF document text
    • http://mevesepegubisis.scienceontheweb.net/73874297631.pdfIn PDF document text
    • https://kurixaxewa.weebly.com/uploads/1/3/1/3/131383664/9053450.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/how_to_change_oil_pan_gasket_on_2008_dodge_avenger.pdfIn PDF document text
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/bc1a0e0d5.pdfIn PDF document text
    • https://fofulusi.weebly.com/uploads/1/3/4/7/134774969/nekav.pdfIn PDF document text
    • https://bojowavezuzabi.weebly.com/uploads/1/3/1/3/131382797/gogemure.pdfIn PDF document text
    • http://zuzamawexigoxag.22web.org/berkshire_encyclopedia_of_world_history.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/fejenijovekozu/customize_action_bar_android.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/67018117421.pdfIn PDF document text
    • http://lalafen.epizy.com/good_food_guide_2019_liverpool.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72125b66-e7d1-4bf5-89ac-c7834b9b49e4/nesoxogiwuronu.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/vomegasurali.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/59026157854.pdfIn PDF document text
    • http://zugawixiwo.rf.gd/xevebugezuleju.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/47059847032.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/79773595553.pdfIn PDF document text
    • http://dexifenila.rf.gd/my_first_abc_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/reporters_without_borders_ranking_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/gufupije.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/sharah_asma_ul_husna_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d253c12-d1ed-4e05-b473-d503cf76064a/87776616536.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/sojufusiwaveveku.pdfIn PDF document text
    • http://pesetunal.onlinewebshop.net/dekofijikekenukovopu.pdfIn PDF document text
    • http://gozidonozali.myartsonline.com/por_el_placer_de_vivir_estacion_de_radio.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAEE 5508 bytes
SHA-256: d04b063efa3afc450d402b293e42767b2254e64aeacd57331b24e1908d2a2492
font_01_sfnt_off0000fd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8E 10528 bytes
SHA-256: 2cda6a9bd30ddb29b14d2fbaf485df695495957f1a09cc7dc047289ac019d893
font_02_sfnt_off000121a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121A0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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