Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ff44f07b0eaf7e…

MALICIOUS

PDF

85.7 KB Created: 2021-04-19 23:56:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8fd4cdf7bf02061e8df77f0544faae73 SHA-1: ade6226845364942ff704f8fb99d1098bb21f44b SHA-256: 68ff44f07b0eaf7e2e375ae7a849f11533038a5e7c0889237b47998a6eed5757
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jumiwimov.ru/strik?utm_term=is+fmla+paid+in+illinois PDF link annotation
    • http://kigirifaduguv.getenjoyment.net/area_of_trapezoid_word_problems.pdfIn PDF document text
    • https://tufafoselebore.weebly.com/uploads/1/3/5/3/135389740/dotugapot.pdfIn PDF document text
    • http://zaxiluxedexu.getenjoyment.net/apollinaire_les_colchiques.pdfIn PDF document text
    • https://ronalowo.weebly.com/uploads/1/3/4/8/134872729/zadoxufefel.pdfIn PDF document text
    • https://jewelilug.weebly.com/uploads/1/3/4/3/134331877/begabawe-supola-lezileseb-vigarezovemam.pdfIn PDF document text
    • http://wutanumijejol.sportsontheweb.net/calcium_oxalate_stone_diet.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/firudegix/vigosidixerexaranoj.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/android_6._0_1_rom.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/zimasutixegenozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9610ca6-cba1-4411-b06c-79b329eb4212/notejibujutazojimufewowed.pdfIn PDF document text
    • http://wovodijulenape.onlinewebshop.net/63280974066.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/android_studio_debug_over_wifi.pdfIn PDF document text
    • http://penobugixova.atwebpages.com/cost_center_accounting_sap.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/24305579039.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/nuxariwe.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/xotorazoserukanasute.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/33219667687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ebd916-8f7b-4767-a597-5de51c394a19/how_to_watch_kung_fury.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc8c5076-baee-4c6b-8eaa-d046c38cbd22/wiromidivanedefavesow.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/terabonalozirijemotix.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/how_much_is_nikon_d5200_price.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/88900751634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb64ffd7-afb7-4c65-b889-c797113b3c19/braava_380t_beeps_while_charging.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b0313e8-c640-4516-a401-588d579dc5c9/martin_luther_king_speech_i_have_a_dream_rhetorical_analysis.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D6 4616 bytes
SHA-256: abf81b3b41b5cf0a71eb533578098958040ad7d3bb1261a7ca031a4822f1587c
font_01_sfnt_off00011454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11454 11336 bytes
SHA-256: ea09e2ac1e05d339db0c978b611ec93bc6153be81cfbde6bcc7f7db0bd905b93
font_02_sfnt_off00013ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AC6 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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