Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1628c95117f2c2…

MALICIOUS

PDF

82.3 KB Created: 2021-04-16 08:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f9c6f449be5033345374df954961a7a7 SHA-1: 28fcf09f9a84002c87129cbb87c2fc1b8dce3f8d SHA-256: dc1628c95117f2c23b1fd9c37670a08ef12ccf70a4a4badda750fcca3a935d0d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to potentially malicious or link-farm domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The presence of a URL related to 'The crown season 4 episode 4 cast admiral' suggests a lure to attract users interested in popular content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or content-luring attack.

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://soxebez.ru/strik?utm_term=the+crown+season+4+episode+4+cast+admiral PDF link annotation
    • http://mizifasurogik.mywebcommunity.org/arabian_nights_bangla_free_download.pdfIn PDF document text
    • https://rigawegafo.weebly.com/uploads/1/3/4/5/134587157/545060.pdfIn PDF document text
    • https://koxufujemugipad.weebly.com/uploads/1/3/0/7/130739729/fewazegegab_fademipewasume_filovow_vibipipanuru.pdfIn PDF document text
    • https://mupexopuwes.weebly.com/uploads/1/3/4/7/134722910/8981713.pdfIn PDF document text
    • https://jabukilitidaz.weebly.com/uploads/1/3/2/7/132740438/69263b29e03405.pdfIn PDF document text
    • https://vupolape.weebly.com/uploads/1/3/4/7/134749420/xujevotepuboribetuf.pdfIn PDF document text
    • https://xagigerabep.weebly.com/uploads/1/3/1/4/131483632/52893d57.pdfIn PDF document text
    • http://zojulosopejozaz.iblogger.org/microstructure_of_copper_alloys.pdfIn PDF document text
    • https://nojupifidupo.weebly.com/uploads/1/3/4/3/134361410/8932206.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
    • http://winovonisalupib.rf.gd/wizkid_superstar_album_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/4468427416.pdfIn PDF document text
    • http://siniligavaxuvul.onlinewebshop.net/the_long_goodbye_raymond_chandler_analysis.pdfIn PDF document text
    • http://monawob.epizy.com/warowegarafutazalepe.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/how_to_do_expository_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/maharashtra_b._ed_cet_2018_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/anaphylaxis_management_guidelines.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_off0000f74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF74C 5228 bytes
SHA-256: 68dd6a2b56f9e974cdd377b493b5dee24d3cc89533f58df1b0a9f215ff1759b0
font_01_sfnt_off000108f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F4 11008 bytes
SHA-256: 36595a9a24412c633cf4fd83cf37320655c0ae09c39775caf9b75af6ede6a106
font_02_sfnt_off00012e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E3E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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