Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc59aa9af6242b3…

MALICIOUS

PDF

78.9 KB Created: 2021-01-17 17:47:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 53776232207ea65576131a00de2e34a4 SHA-1: c3892dae15d335bc44bdbb739fdcb5ab77bcc52e SHA-256: bcc59aa9af6242b368ca59369151ba90a5abe2c75e308f8c0522fd6ec02c82a3
134 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. It uses an invoice-themed lure. 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 0.9998

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://trafffi.ru/123?utm_term=bill+of+sale+scotland PDF link annotation
    • https://site-1242663.mozfiles.com/files/1242663/95225537177.pdfIn PDF document text
    • https://cdn.sqhk.co/rarinuva/mzjharC/brazil_champion_of_the_american_cup.pdfIn PDF document text
    • https://site-1178836.mozfiles.com/files/1178836/screen_recorder_with_audio_app_for_android.pdfIn PDF document text
    • https://site-1176519.mozfiles.com/files/1176519/zudivu.pdfIn PDF document text
    • https://site-1084156.mozfiles.com/files/1084156/collagenase_ointment_davis.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/NGhjCcG/smart_switch_wireless_sonoff_4ch_pro_r2_wifi.pdfIn PDF document text
    • https://vogizezadu.weebly.com/uploads/1/3/0/8/130814341/zuvebokuzibizer_sasebewar_mipijapinegixin_judubevif.pdfIn PDF document text
    • https://lodavoxi.weebly.com/uploads/1/3/4/5/134505118/vebifur.pdfIn PDF document text
    • https://site-1175458.mozfiles.com/files/1175458/metronome_beats_2_and_4.pdfIn PDF document text
    • https://site-1178179.mozfiles.com/files/1178179/xotorimipiwixiwulano.pdfIn PDF document text
    • https://site-1171591.mozfiles.com/files/1171591/sabalarajavetoko.pdfIn PDF document text
    • https://tedomidile.weebly.com/uploads/1/3/2/7/132712102/129480.pdfIn PDF document text
    • https://site-1168500.mozfiles.com/files/1168500/zovoniwirovakatuperusub.pdfIn PDF document text
    • http://xaduwojitodefo.66ghz.com/jeans_waist_size_guide.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
    • http://gagutaxu.rf.gd/466427959.pdfIn PDF document text
    • http://kibululugavi.epizy.com/nilevi.pdfIn PDF document text
    • http://povuputuk.epizy.com/67868858213.pdfIn PDF document text
    • http://dokelegusipodi.epizy.com/relationship_between_curriculum_and_syllabus.pdfIn PDF document text
    • http://beninoduvewer.epizy.com/85564185730.pdfIn PDF document text
    • http://xepalufozakot.epizy.com/57305592461.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFA 4756 bytes
SHA-256: f5fd41cf1166b8bbc9a882f86a93e05e88a37577dd8e20c457fbdacf6c7ec504
font_01_sfnt_off0000fc2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2B 10716 bytes
SHA-256: 76cc2c0fd2ba895c352a1ebb67c6082a1b74cc79dc732118d1a9b1554260821d
font_02_sfnt_off0001209c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1209C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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