Malicious PDF — malware analysis report

Static analysis result for SHA-256 0458b617ff3cfd89…

MALICIOUS

PDF

81.9 KB Created: 2021-03-04 22:45:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0a6771f07534065aafddfba78c97a1a9 SHA-1: ffa8bda3bdb2c08d273766d527fd9c247ccf942a SHA-256: 0458b617ff3cfd89d6a2d09b98d07cae0cdd3bfe771bf64b7c2c51d5ae453e0c
126 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that mimics a movie streaming search result, likely intended to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan delivery mechanism. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://mezovuduw.ru/award?keyword=princess+diaries+2+movie+stream PDF link annotation
    • http://vodabutopidaru.getenjoyment.net/how_to_put_jlab_in_pairing_mode.pdfIn PDF document text
    • http://jijuduli.mywebcommunity.org/google_cardboard_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477892/normal_5fe0cbaa33134.pdfIn PDF document text
    • http://natur-bio.space/banijozorikob9r14j.pdfIn PDF document text
    • http://doweryklkq.space/why_is_my_fax_machine_not_sending_faxesn16c6.pdfIn PDF document text
    • http://wordsidepost.top/lukeriloxogapomevetgd8s1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502436/normal_603e86ba6d272.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378381/normal_5ff48a216ad97.pdfIn PDF document text
    • http://erogan-columbia.site/xifogirizelireexzpq.pdfIn PDF document text
    • http://baltika-trans.ru/faliresowekudovd1b06.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://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_7f2fdb208513470baf781242cc365fdd.pdf?index=trueIn PDF document text
    • http://bojilukirifep.rf.gd/22385898872.pdfIn PDF document text
    • http://fejusudoboriduf.rf.gd/mammoth_lakes_california_fishing_report.pdfIn PDF document text
    • https://ea74ff18-003d-4094-8454-8d7e15e33abb.filesusr.com/ugd/50de67_d34b62782ba34d8c80f86032b4f8a0df.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/sba_fact_sheet_latvia.pdfIn PDF document text
    • http://solukirakologi.epizy.com/muvogodakaxojub.pdfIn PDF document text
    • http://giwokekurodi.rf.gd/biography_book_report_template_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/wheely_8_apk.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_off0000f7f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F7 5036 bytes
SHA-256: 2dc1066eacec5b72ed41ff95ba95b362644ec73d6ac99bc9ac99494a390b73f1
font_01_sfnt_off000108f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F2 10320 bytes
SHA-256: 896888765067492cedb12345938dc2ea858c98701507fabf2ca66777b6ec8947
font_02_sfnt_off00012c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C42 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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