Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa77c832d011e7b4…

MALICIOUS

PDF

85.9 KB Created: 2021-03-25 00:30:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 92a91dd8209d376d8d834727c3bbc85b SHA-1: b6aef1c388db5ff6954636186cb33aa243bd4e79 SHA-256: fa77c832d011e7b4f1f857801e0b63f41ea6e160806d97e896bc4b0926f5bc25
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/wix?keyword=happy+new+year+2018+pictures PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451045/normal_6018d9446b78b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417419/normal_6017503d2eddc.pdfIn PDF document text
    • http://remastacer.com/siren_head_story_game_robloxljix0.pdfIn PDF document text
    • http://bezugunafagomup.22web.org/t_fal_optigrill_steak_recipes.pdfIn PDF document text
    • http://temiwivixova.iblogger.org/53950531296.pdfIn PDF document text
    • http://mixed-rootwork.com/inflorescencia_del_maizx2jjv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378379/normal_603bbd286d36b.pdfIn PDF document text
    • http://islta.fun/h2o_mop_x5_walmart_mexicosc1s4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389085/normal_600872480f2bd.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/tuxalowafokuvo/39161322313.pdfIn PDF document text
    • https://55f5e71c-5f54-469f-9449-301c43944234.filesusr.com/ugd/bbdb65_f984cc5e2bbe4e97b7e8957d7bc37f7d.pdf?index=trueIn PDF document text
    • http://dafiwogi.rf.gd/guwavajexadalepovuke.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/excel_vba_array_function_multidimensional.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/kunitapusefosuf.pdfIn PDF document text
    • http://pijedawometuzov.epizy.com/tamil_calendar_2020_free_download.pdfIn PDF document text
    • https://ad177677-9664-42cd-9bf2-17a10eef6e1d.filesusr.com/ugd/f8915e_1347932ba8584fb0a3480a606fc0d435.pdf?index=trueIn PDF document text
    • https://f85e9a30-dbb9-40fd-a66d-53bd7daafe07.filesusr.com/ugd/1b9faa_ece5712c3d5b45b7a7b4dd787ee7f6a1.pdf?index=trueIn PDF document text
    • https://1e6856c5-1481-42a3-8d1a-2a2567f9fa5a.filesusr.com/ugd/a8b033_d81d59063ac349b592273efa673fd1bd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/17980397108.pdfIn PDF document text
    • https://9907981b-0bc7-4fd3-a434-169f7cdadf42.filesusr.com/ugd/575363_feb497ec5a7c4310a3ff0d2217f4ba10.pdf?index=trueIn 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_off0000f61d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61D 5340 bytes
SHA-256: ecb2094fbc1b6899c653376efc6f01212e3bd36c5e03f544e05fa54037e6eb4a
font_01_sfnt_off00010867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10867 21624 bytes
SHA-256: 12a9d2dd059710b6fb6ec547542f0e00a75524b11c49963f30ce621370a6dd18
font_02_sfnt_off00013a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A9C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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