Malicious PDF — malware analysis report

Static analysis result for SHA-256 47be650d7199b9de…

MALICIOUS

PDF

124.0 KB Created: 2021-03-16 11:02:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 331a6c153419910720b09d5b9c8bdb1d SHA-1: 3ac3542faafca1df08f58a0fa6178149f62b303f SHA-256: 47be650d7199b9defbb820ab4c264680bb25ba4ec6e2f030f8b863b5f832eff8
244 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier, indicating it is likely a phishing or malware distribution lure. It contains numerous links to external websites, many of which are hosted on disposable domains or known redirector infrastructure, suggesting an attempt to direct users to malicious content. The presence of embedded URLs and the overall structure strongly suggest a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://dafemum.ru/123?utm_term=dell+latitude+e5400+spec+sheet+pdf In PDF document text
    • https://cdn.sqhk.co/talokelom/iyiiyja/rope_cutter_gun.pdfIn PDF document text
    • https://cdn.sqhk.co/solaxutom/hgclpgd/98619542097.pdfIn PDF document text
    • http://roselosudeve.sportsontheweb.net/kotuzosumazatalemuvan.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/ZhivOig/pes_card_collection.pdfIn PDF document text
    • http://gejedesoni.getenjoyment.net/how_to_dye_the_tips_of_your_hair_with_splat.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/LDhigea/tamebegu.pdfIn PDF document text
    • http://zurujavurobe.scienceontheweb.net/apache_camel_in_action_second_edition_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sewujuzanas/6t27qdK/67658062294.pdfIn PDF document text
    • https://cdn.sqhk.co/jobasalem/LNgc1E2/birenekovudirosarifesoz.pdfIn PDF document text
    • http://votixibutiro.medianewsonline.com/moxogabuselifinuxak.pdfIn PDF document text
    • https://cdn.sqhk.co/nivurerazusa/8hbJwhS/poster_on_save_water_save_earth_with_slogan.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/kumasala/ashoka_all_songs_free.pdfIn PDF document text
    • http://zorijefugixor.atwebpages.com/hp_elitebook_folio_9480m_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/road_trippin_guitar_tab.pdfIn PDF document text
    • http://tigagatu.atwebpages.com/what_is_blue_green_eye_color_called.pdfIn PDF document text
    • https://9d1e48ad-bcd7-4831-9b7b-7108443a63b6.filesusr.com/ugd/136d07_6b95dcff85d740ddb703bc1aedef98b7.pdf?index=trueIn PDF document text
    • http://wupidusujimi.myartsonline.com/meaning_of_structural_adjustment_programme.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/72326237736.pdfIn PDF document text
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_4f86b45ad5d1408d95ae781effc61c09.pdf?index=trueIn PDF document text
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_819f5bb04a9e4f678260e4e803434e16.pdf?index=trueIn PDF document text
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_cac4e18a29e7483da810b1addd1397a7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/chicken_invaders_2_for_android.pdfIn PDF document text
    • http://wipibefab.onlinewebshop.net/administracion_de_la_calidad_total_aliat.pdfIn PDF document text
    • https://e3c65705-3664-417e-97b1-2ac29bfab8bd.filesusr.com/ugd/6a5da5_379af91a82b34af284ab2270954784c3.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F7 42444 bytes
SHA-256: b0de5a25f2b6ae49961871f35e089ee4b9142d6b0232994e4633199facc5acff
font_01_sfnt_off000183c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x183C9 5500 bytes
SHA-256: d12569b8219a2e8388ab36ba30a7d180e34ab856386435292777f33cdf15e932
font_02_sfnt_off00019695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19695 20080 bytes
SHA-256: ac526a2b6c062c2f2cedcfa8a4fd758b060ff2021bb5cc0988f93f2710ff6914
font_03_sfnt_off0001cc9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CC9B 16160 bytes
SHA-256: 25a5e6c7c9cd73e1730f271d334b71b3c0ac6385951e3737251623a68d8eef5c