Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1c0b9a3547784f7…

MALICIOUS

PDF

73.1 KB Created: 2020-12-24 13:32:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d34773375ed5fe4ab0ee7b94df547000 SHA-1: 9654690ed2ba08605690cba142de4351b368237c SHA-256: a1c0b9a3547784f76a2c69d055bba9f6c32dd8df5cabad28fffc332fa2823b15
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'traffking.ru', which is likely used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into navigating to a malicious site, consistent with a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/aws?utm_term=training+calendar+template+free PDF link annotation
    • https://cdn.sqhk.co/jesisuvov/bxib3WW/heroes_of_hammerwatch_light_puzzle_solver.pdfIn PDF document text
    • https://cdn.sqhk.co/fidapulano/KggOifL/slot_machine_games_ipad.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/u5heijl/dungeons_and_dragons_online_worth_playing_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/24637969-adde-4098-b63c-fc5676338ac9/mimoxokuniluwu.pdfIn PDF document text
    • https://s3.amazonaws.com/padoragog/gazeta_wspolczesna_lomza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a202fe4-69ea-4ff4-a86c-6e476d0a691f/18474850398.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/nizesikikepitomixazuda.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/ljmu_harvard_reference_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/mowar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c4d12dc-b892-462f-8295-76369b74f0f6/xakakatapaxepumofuwagene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/184e6c1c-5e76-4efc-b6de-49ec6158d66c/port_townsend_coupeville_ferry_length.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/bootstrap_admin_template_horizontal_menu.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_off0000e3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AD 5244 bytes
SHA-256: 2e8e099159133246b896c531da720b825e6ef886bc341c085d0e82d5b0302006
font_01_sfnt_off0000f56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56E 9952 bytes
SHA-256: 77795c769acac678b496323cb3d01e4f8a4e489a84204274b184c2959061423e