Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f0d5bcd20b5664e…

MALICIOUS

PDF

75.6 KB Created: 2021-03-02 02:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5e402961f8820336323561ab146a16ca SHA-1: 4000cb8cee1f724dbb6019631c2677a6862c8b2f SHA-256: 8f0d5bcd20b5664e2c631a56c2e0dfa82c0f61686b1fbfde11af9e9dbc991a0c
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest an attempt to redirect users to malicious content.

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 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://jumiwimov.ru/wix?keyword=3+regions+of+utah PDF link annotation
    • https://napajudiweji.weebly.com/uploads/1/3/4/3/134316113/68cc74e99023.pdfIn PDF document text
    • http://uniques.space/wujopivinuzinepewute9zz0k.pdfIn PDF document text
    • http://xiruzox.mygamesonline.org/basic_computer_tutorial_for_beginners_ppt.pdfIn PDF document text
    • https://gixisisopovi.weebly.com/uploads/1/3/4/7/134713576/2854743.pdfIn PDF document text
    • http://azorocheat1.xyz/humblement_dans_le_silence_partitionatrxw.pdfIn PDF document text
    • https://gexamefirizawem.weebly.com/uploads/1/3/4/6/134668325/121b84c46.pdfIn PDF document text
    • http://ladirojenovezoj.mygamesonline.org/21292278815.pdfIn PDF document text
    • https://rirosivipoxutu.weebly.com/uploads/1/3/2/3/132302830/ea44235181a.pdfIn PDF document text
    • https://zatemolepilud.weebly.com/uploads/1/3/6/0/136085897/wegituri.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/a_time_to_kill_book_summary_by_chapter.pdfIn PDF document text
    • https://kogekotosejikol.weebly.com/uploads/1/3/5/4/135400664/tevopapuwazu.pdfIn PDF document text
    • https://tiguziriwisil.weebly.com/uploads/1/3/1/0/131071210/4163804ec7.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/lijulijowivaze/aashiqui_2_movie_dialogue_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/xomukesiwulatax.pdfIn PDF document text
    • http://pekomuvave.myartsonline.com/why_is_interpersonal_communication_important_in_nursing.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/441737401.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/jomo_kogen_japan_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/jeferivimotitarabixivuj.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_off0000e105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE105 5068 bytes
SHA-256: 38053eb59243c496143d7cb61976b3c35f73cb480309485d42817e8c2230991c
font_01_sfnt_off0000f23e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF23E 15052 bytes
SHA-256: 26ae65bcb28b8ef3c03e1fc9e61131e02edbf2c16577fabe9e8152f9b84dc344

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