Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c3b453f8a9024da…

MALICIOUS

PDF

111.2 KB Created: 2021-05-10 02:02:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 571dda7b547ef8a00add70c07742d0ae SHA-1: b0d63798f1698b33e48416fcbc2276d8544fe067 SHA-256: 6c3b453f8a9024da49cbb12f3b63e0b5f06b1fd05a9e5a7c5d1a426807c132a8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, references '48 laws of power summary download', a common lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/strik?utm_term=48+laws+of+power+summary+download PDF link annotation
    • http://tiwimifozukimu.medianewsonline.com/beckett_baseball_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sogunixe/ljdyge5/navakofuwumowubijaf.pdfIn PDF document text
    • http://pexulisinipev.sportsontheweb.net/77984424365.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/kikukigi.pdfIn PDF document text
    • http://befakupamexi.iblogger.org/crossfit_workout_tights.pdfIn PDF document text
    • http://bexemusu.mypressonline.com/einstein_on_the_beach_score.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/3LLjfxc/89478698946.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/gciihgY/luzelak.pdfIn PDF document text
    • http://nutetuxiv.mygamesonline.org/pastest_mrcp_part_1_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/ladetozuxi/jcghdhc/lemerezenakemuvixudaza.pdfIn PDF document text
    • http://geloritiveda.mygamesonline.org/mechanical_drawing_symbols.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/jhggngj/hope_for_paws_new_videos_2020.pdfIn PDF document text
    • http://gajelifuluxapov.mywebcommunity.org/lijoji.pdfIn PDF document text
    • http://kufomabid.mywebcommunity.org/mastering_bitcoin_unlocking_digital_cryptocurrencies_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbe1be6d-8584-44f2-8d75-79beb0e1e7c9/international_dt466_engine_length.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/tumaczenie_zda_angielski_wiczenia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a768488-0455-4784-9ac3-1b9316e87889/73433621380.pdfIn PDF document text
    • http://xedonufil.rf.gd/58310161183.pdfIn PDF document text
    • http://zuzenif.rf.gd/surface_pro_3_pen_annotate.pdfIn PDF document text
    • http://kipazafar.atwebpages.com/9359192302.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EB4 5568 bytes
SHA-256: c2b975a3ef2d9598ff265c097c460b2a73f4e33763c349d288091184f06abfd0
font_01_sfnt_off000171ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171AC 11548 bytes
SHA-256: bcf649e98e200c14d321ee8b29431666c5ce2c3cde1ea23c2fdbcbfc14327850
font_02_sfnt_off00019915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19915 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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