Malicious PDF — malware analysis report

Static analysis result for SHA-256 d411754f5ee87d20…

MALICIOUS

PDF

78.1 KB Created: 2021-04-01 16:55:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bc2c7f8966bc727ac84932a89cf8b7cb SHA-1: 10c82cd7901e5df6c6492c2ebea32dfeaed06fc7 SHA-256: d411754f5ee87d203b0517f4cbb45685b5507864ecf9edbd7dc6c06f8f171cf0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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 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.
  • 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://ponafet.ru/wix?keyword=toshiba+satellite+c55+service+manual PDF link annotation
    • http://4bochki.ru/96862109251rv8e0.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/dxeheia/butajixad.pdfIn PDF document text
    • http://naturalm.space/how_to_reset_garmin_s60nyw3f.pdfIn PDF document text
    • http://wobafobigo.mywebcommunity.org/koriwexidogagixur.pdfIn PDF document text
    • http://marabogujuj.iblogger.org/samsung_ue49mu7000_review.pdfIn PDF document text
    • https://cdn.sqhk.co/sowumavag/giaO1vA/couple_love_video_status_for_whatsapp_sharechat.pdfIn PDF document text
    • http://cherrypimp.online/how_to_make_easy_money_from_home_20203jogb.pdfIn PDF document text
    • http://usechambre.xyz/57932984910m8krn.pdfIn PDF document text
    • https://cdn.sqhk.co/gijimexuv/hSha13G/49669104316.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/jbhBjfN/evoland_3_apk.pdfIn PDF document text
    • http://siteznakomstv69.space/92338594385lyems.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tugojan.rf.gd/xategewevefedobomupisi.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/29869487285.pdfIn PDF document text
    • http://bekujefil.epizy.com/what_is_the_smallest_george_foreman_grill.pdfIn PDF document text
    • http://botemexake.rf.gd/openssh_authorized_keys_file_format.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/the_expanse_book_series_order.pdfIn PDF document text
    • http://kojevas.epizy.com/65450668278.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/travel_blog_template_wordpress.pdfIn PDF document text
    • http://pavafisufopu.myartsonline.com/vusoto.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/new_cm_list_of_india_2018.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_off0000f437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF437 5312 bytes
SHA-256: c8c12cabade9f0bc1c133dff9c73e67e9b0d834a8bd447ed7491bbf37470c2c2
font_01_sfnt_off00010629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10629 10856 bytes
SHA-256: f600c9a50bf4e4961e68c23243e11e40d4f46c66ba214a8c594182e8c0efad40

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