Malicious PDF — malware analysis report

Static analysis result for SHA-256 589d7d2491601461…

MALICIOUS

PDF

69.1 KB Created: 2021-03-16 00:24:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 65ebe7fc0298bb5d95b3f65b5cf93f68 SHA-1: 81cf1dee104f9f22a18b2a79cbad5a7ad944d8aa SHA-256: 589d7d249160146184a454f9bf96ebc62fa3f46eb2a7b5bda5c61b056966287d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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://jumiwimov.ru/123?utm_term=cymatics+serum+presets PDF link annotation
    • http://ruszaimclub.ru/asus_p8z77-v_pro_atx_lga1155_motherboardbf9nr.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/61aaAkw/love_artist_quotes.pdfIn PDF document text
    • https://cdn.sqhk.co/kuderoxuz/gisOgcc/kujupomeke.pdfIn PDF document text
    • http://podcard2020.site/zatuwusunuvodiwirelar8z5wx.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/kebipetegizasowewijaw.pdfIn PDF document text
    • http://likefetevu.getenjoyment.net/exalted_1st_edition_free.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/wemaduzumodiveg.pdfIn PDF document text
    • http://shop-kid-toys.online/vegetable_chop_suey_recipe_in_tamil36bya.pdfIn PDF document text
    • http://sewawena.scienceontheweb.net/genetics_textbook.pdfIn PDF document text
    • https://cdn.sqhk.co/rogokivika/ggchcCY/daximurexabub.pdfIn PDF document text
    • https://cdn.sqhk.co/kidirugolo/hhimegc/defamajubozu.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/nelizenejakarug/9478628406.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26153e05-cbad-4f57-adb8-aef627844bec/blackdecker_st5530-gb_corded_grass_strimmer_550_w_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04c825fa-2918-499a-9c99-c25f5e6d3fe6/xikimixawumatunujawipabi.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/formal_mail_format_for_job_application.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/basic_computer_course_fees_in_bangalore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bc99821-ecae-4aba-aaa3-724658a0afd8/how_to_do_a_love_tarot_reading_for_yourself.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/602480da-2faf-44ff-bd7a-e92f8568a26f/82739665181.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/14292089352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd9c0b9b-70a7-48f7-b1ce-c0b4534eeccb/kill_bill_script_vol_2.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19C 5056 bytes
SHA-256: 1c27834f5b966680b415a6af2716360bc05808eb6ccd50efc013ccaef9fbfe0a
font_01_sfnt_off0000e2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B5 10736 bytes
SHA-256: 820df8a6cd76304ddf7e41768038d3f656c898e5fc9ea452e652b376ee8f2f00

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