Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb2a98277328c05…

MALICIOUS

PDF

66.4 KB Created: 2020-12-17 20:47:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 726fcdec6a9208716f83310fb4ba8631 SHA-1: 7143e494c5d69a7a2328fdf046627d0acbb5e2da SHA-256: 1fb2a98277328c0530553e9d3556de5c2a89e917ec41d3a47fee65c5e5b17485
96 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV as a phishing trojan and a machine learning classifier. It contains an embedded URI pointing to 'trafficel.ru', which is likely a malicious domain used for phishing or to host further malicious content. No scripts were extracted, but the presence of the malicious URL and the high confidence score from the ML classifier indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/123?utm_term=eleven+sandra+cisneros+quotes PDF link annotation
    • https://tumokisomagen.weebly.com/uploads/1/3/4/8/134897409/6078220.pdfIn PDF document text
    • https://pulatufulufu.weebly.com/uploads/1/3/4/6/134610330/wutib_fisojuxasufed_bumuvidomof.pdfIn PDF document text
    • https://punujagenak.weebly.com/uploads/1/3/0/7/130775029/sakexer-taxonuw-suwesabarunar-rogeperovex.pdfIn PDF document text
    • https://petizigosi.weebly.com/uploads/1/3/4/9/134903326/xijipebol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tadevewuju/sanuvotajexivupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9a6a9d1-fac1-48c2-9af2-dd8930b117b9/Japon_ensest_oyun_gsterisi_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b91f5c1-7532-48cb-bf0b-f023ff5eb022/identifying_figurative_language_worksheet_1_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/wow_classic_horde_leveling_guide_50-_60.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/apa_format_for_bibliography_example.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe730d2dd96f5918c10db0/1606316813718/happy_death_day_streaming_sub_indo.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/surut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52b71a87939686423f1f1/t/5fd1ee9dc10336458b3a3397/1607593632880/zenovak.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/jozudisigejabokor.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce6a8b08bb286b7fd0632f/t/5fd16384eeaf2774ac7f9171/1607558021340/14841303455.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c10f1452f90b7ffdc99d/t/5fc5c81de18c5c478ec3b305/1606797341926/90690424038.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000baa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAA8 4956 bytes
SHA-256: 213ea25b1da2eef6a70bfcb8657929061ee62f17d19fac7253dfed68ee2c7de2
font_01_sfnt_off0000cb88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB88 10260 bytes
SHA-256: f6941ead2ce1f2f0ad08e73a425a05c3fb06901aad94e690f33b435e46acbdce
font_02_sfnt_off0000ee3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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