Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb1828336c108eb8…

MALICIOUS

PDF

91.3 KB Created: 2021-01-18 13:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 46addf33d41d9ca7a4850ff65903a43c SHA-1: a656239f86533626688365f1beb13d2c7ad9e160 SHA-256: bb1828336c108eb8278c7c405d2c3da71c51a9d88c21d2624e57dccaf4deb15b
104 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'trafffi.ru' suggests an attempt to redirect the user to a potentially harmful website, likely for phishing or malware distribution. The heuristic 'SE_URGENCY_LURE' further supports a phishing pretext, aiming to prompt immediate user action.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=blackpink%20merch%20amazon PDF link annotation
    • https://cdn.sqhk.co/vudebalox/qggFhjf/how_high_do_you_get_when_parasailing.pdfIn PDF document text
    • https://site-1168500.mozfiles.com/files/1168500/filifuzajejomatovu.pdfIn PDF document text
    • http://nelawetazabuta.66ghz.com/imagery_worksheet_for_middle_school.pdfIn PDF document text
    • https://site-1168409.mozfiles.com/files/1168409/dilowepatekuxujaroximafa.pdfIn PDF document text
    • https://site-1230008.mozfiles.com/files/1230008/l_amiti_se_transforme_en_amour_citation.pdfIn PDF document text
    • https://cdn.sqhk.co/dibidoretu/ishaii8/66757636078.pdfIn PDF document text
    • https://site-1175307.mozfiles.com/files/1175307/django_url_patterns_template.pdfIn PDF document text
    • https://site-1168300.mozfiles.com/files/1168300/super_mario_world_the_new_adventures_deluxe_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/PNjaHq8/56019491466.pdfIn PDF document text
    • https://site-1168179.mozfiles.com/files/1168179/homescapes_ads_game.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/xoxaneral/sewowiwidoza.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/self_appraisal_comments_by_employee_example.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/64888367116.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/2019_calendar_with_indian_festival.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001000a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000A 3384 bytes
SHA-256: 1ce8252e162d4b0461d769da5b1b6d9e50ca2280db44bf15b576b3e8bdd35cca
font_01_sfnt_off00010c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4E 5156 bytes
SHA-256: 4f9476e54eab8bfd35c8b5aa78ac41537b0c60a31002d089a916cc742196dc0b
font_02_sfnt_off00011db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DB9 13868 bytes
SHA-256: 27a43061178885b07bd97f4e9ca6987247c6bf7d778c5f18a7bb29b901024788
font_03_sfnt_off00014ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AB8 16068 bytes
SHA-256: 2fb4fdb455d00fcc1170b556ae817e66a2c1998407b8406f01945057f3de0b9e

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