Malicious PDF — malware analysis report

Static analysis result for SHA-256 007b25bdca998ea5…

MALICIOUS

PDF

70.8 KB Created: 2021-02-23 13:12:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 5a06f1797a3094f1935cfe44c8dd9fc7 SHA-1: 8487bbb807cca30d16f514bdab8b26750ec021db SHA-256: 007b25bdca998ea5d9ff94e6b1751da21e9441a915acb2847aeb4a2b5ac4d0f8
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links pointing to disposable domains and known malicious redirectors, indicating an attempt to drive traffic to potentially harmful sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the embedded links are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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 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://yafferge.ru/wb?keyword=acer%20aspire%20e15%20price%20in%20pakistan In PDF document text
    • http://yewes.fun/mblex_study_guide_2019_freemwr7f.pdfIn PDF document text
    • http://tublitalia.space/46375507072iiu17.pdfIn PDF document text
    • http://buyfastedcircle.xyz/font_iphone_for_android_downloadr7aak.pdfIn PDF document text
    • http://wawimetuboze.iblogger.org/kundalini_yoga_in_malayalam.pdfIn PDF document text
    • http://com-copyrighit.com/ash_grey_gba_file_download1b8v1.pdfIn PDF document text
    • http://lemixop.iblogger.org/mibogesoluwegi.pdfIn PDF document text
    • http://true-board1.club/guwarikemepudug1hcvs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464534/normal_602906a04f047.pdfIn PDF document text
    • https://cdn.sqhk.co/nububufi/higfjgh/sedofepenazuvid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415929/normal_5ff5755d220dc.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/ib8ih36/spray_simulator_pranks.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/jdSFRMd/lepetosababo.pdfIn PDF document text
    • http://feedbacrnz.space/85318635845nn6i6.pdfIn PDF document text
    • http://connexion-amelii.xyz/1571813081y2gsg.pdfIn PDF document text
    • https://cdn.sqhk.co/baxafapunubi/eghIvhi/81748655231.pdfIn PDF document text
    • https://cdn.sqhk.co/fonixoligem/jegfCU4/compare_sim_only_deals_cashback.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422897/normal_6024836894a17.pdfIn PDF document text
    • http://edevletorg.com/aap_beeti_in_urdu1yu4k.pdfIn PDF document text
    • http://hugertely.xyz/5e_weapons_magic_items_homebrewl9g35.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ligededeju.epizy.com/konitebuvuzezu.pdfIn PDF document text
    • http://vepilezora.epizy.com/biosafety_and_bioethics_book.pdfIn PDF document text
    • http://mojebevusawibo.rf.gd/tijuzuvazetevasugigofex.pdfIn PDF document text
    • http://fopebuzab.epizy.com/pexoxasedosatimak.pdfIn PDF document text
    • http://lojogonofar.rf.gd/freshwater_aquarium_fish_list_with_pictures.pdfIn PDF document text
    • http://ragigixo.epizy.com/flight_simulator_no_free_online.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_off0000d6ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6ED 5124 bytes
SHA-256: 1d4e3993ab92c60f0b13bae511d26f1449a0fb75c6a053868eee33cbfbb8e514
font_01_sfnt_off0000e87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87A 10948 bytes
SHA-256: b0e4e283fedfda4f852f3af89780de69502f80695ab2e8c6edc84428f461a0fd

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