Malicious PDF — malware analysis report

Static analysis result for SHA-256 db549c75dcd5730e…

MALICIOUS

PDF

67.7 KB Created: 2020-12-01 16:52:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ed463351ebb91c2eba95de1075fb6f0b SHA-1: 03700f3d4d73f78295e9d8329be6c5a8cb94371e SHA-256: db549c75dcd5730e54e87e05180e82b81f3411cbb86ba8174d4f7b721faa3292
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing document and a link farm, with a high ML classification score and ClamAV detection. It embeds a URL that appears to be part of a phishing or malicious redirection scheme. The document body, though heavily obfuscated, contains text related to search terms, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/strik?utm_term=love+simon+dublado+google+drive PDF link annotation
    • https://zifuxiwow.weebly.com/uploads/1/3/3/9/133997311/tovajirigafikimufix.pdfIn PDF document text
    • https://gupupekulumo.weebly.com/uploads/1/3/4/1/134108922/kalisulet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc27efbcd1e280355de4c09/t/5fc61635cb3e0f5771201a42/1606817337362/kerobatazatunamanija.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d9d28787e879896bb85a/t/5fc11b784e98326c02378e9e/1606491000577/accu-chek_guide_me_user_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe717f173fb5383b74b8da/1606316418702/let_it_be_meaning.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc390e0f9866f3fd2e4e56d/t/5fc5505af3de5e49b5153ffe/1606766683206/xafekuzififuneg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1846b97992eb55bfc03/t/5fc1adc94e98326c024f72b1/1606528458459/92674137532.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/comparative_market_analysis_real_estate_template.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/tc_electronic_flashback_2_delay_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c204c30a162e0c5e803a/t/5fc42cb99d7936484011f6fb/1606692025511/holmes_electric_heater_parts.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5a6d5147b148042a8ad5/1606376046293/seagate_external_hard_drive_1tb_xbox_one.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/wovuzafeben.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/92756056113.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/85577427089.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0696cdf132613bbbb46ad/t/5fc11d21e6d49a06bbb99394/1606491427300/fennec_fox_price_canada.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_off0000ce24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE24 5284 bytes
SHA-256: d681c8ca099413f1d6f545dc6ed80af0cc17a9e14dc9409e93e77373ad8a2c5a
font_01_sfnt_off0000e009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE009 9844 bytes
SHA-256: e012c1baa65acf2f2547c501d2433d2292287185ba472fe5f047373c7c98888a

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