Malicious PDF — malware analysis report

Static analysis result for SHA-256 570bc050bd2bfc3f…

MALICIOUS

PDF

76.7 KB Created: 2021-01-19 08:10:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: da48e1d900fd57de541b46e68c7d31bd SHA-1: 7e9cbbe56ef8f42a0e892bcf718bde4365ce9590 SHA-256: 570bc050bd2bfc3f3146f00bc40326d257a1ccd88d5c1c433ceba1101089b5fe
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms or phishing lures. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The presence of embedded URLs and the overall structure suggest the document is designed to redirect users to potentially harmful content or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/123?utm_term=popeyes+franchise+cost+philippines PDF link annotation
    • https://cdn.sqhk.co/baxijaxazixi/eoqgfji/nuxavane.pdfIn PDF document text
    • https://site-1177113.mozfiles.com/files/1177113/boss_baby_full_movie_tamil_free.pdfIn PDF document text
    • https://vadibuxazuxubaw.weebly.com/uploads/1/3/4/8/134855910/1725657.pdfIn PDF document text
    • https://kisogegexene.weebly.com/uploads/1/3/4/3/134374262/sarukowunepeb-fibugoka.pdfIn PDF document text
    • https://site-1178208.mozfiles.com/files/1178208/my_talking_tom_gold_run_mod_apk_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/87shKjg/dungeon_survival_ios_guide.pdfIn PDF document text
    • https://tewubituzidebu.weebly.com/uploads/1/3/4/3/134359488/2520236.pdfIn PDF document text
    • https://site-1179698.mozfiles.com/files/1179698/are_poblano_peppers_good_in_chili.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wuniku/73455898113.pdfIn PDF document text
    • http://zegudonokor.epizy.com/google_chrome_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/elgin_sc_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/7437186182.pdfIn PDF document text
    • http://sawopigemon.epizy.com/arch_linux_file_from_url.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/rmc_android_call_recorder_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/bijujafosizivi.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/cinebox_remote_control_apk.pdfIn PDF document text
    • http://xibubew.epizy.com/free_act_reading_practice_test.pdfIn PDF document text
    • http://namavorudil.epizy.com/salipakipa.pdfIn PDF document text
    • http://bexatati.epizy.com/red_hat_ansible_documentation.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/migokavis.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_off0000ed4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4E 5204 bytes
SHA-256: 42dfb0ec374ddf1fac1a7f0417138dbbc32cee2f679c97a8523b42a31813b312
font_01_sfnt_off0000ff05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF05 11308 bytes
SHA-256: 997691ff04e36ddc91682553794ed7f80e0db67f834a4273e10ce78549353c25

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