Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3199ca5330dd8b2…

MALICIOUS

PDF

78.1 KB Created: 2021-03-28 10:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cfac87d479467ffd846f616675c66902 SHA-1: 714da5dbac144f7e27c38c6dfbd544c876883de6 SHA-256: d3199ca5330dd8b221b6f9537fc1a9d9629498f0fca9fa85344a06f2ea964b85
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 0.9996

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://xajibur.ru/wix?keyword=yorkies+in+houston+texas PDF link annotation
    • http://rosativiwam.mypressonline.com/97682712756.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/ojj9wjj/kingdom_new_lands_guide_statue.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvukidovime/gjapM2g/nenufesosumul.pdfIn PDF document text
    • http://souve.me/does_southwest_rapid_rewards_have_travel_insurancelebvc.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/25444376856cb9gc.pdfIn PDF document text
    • http://tesocoin.online/will_there_be_a_third_season_of_dirk_gentlys_holistic_detective_agencyi68ki.pdfIn PDF document text
    • http://xenuven.22web.org/juvesolefikalirisubifib.pdfIn PDF document text
    • http://eagleaff.com/ford_v_ferrari_logo_pngrsxnt.pdfIn PDF document text
    • https://cdn.sqhk.co/sipupubu/agegiKR/ninja_dash_mod_apk_happymod.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/istikhara_ki_dua_in_urdu_translation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wabiwixi.epizy.com/jesitibesareto.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/iifl_wealth_management_annual_report_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f086ff67-7866-4b8a-9e8e-b84b345cea44/fejixasoj.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/sulegodi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18740a15-4c87-4c34-9ff9-f76c7219c453/juvaxuxisodoxur.pdfIn PDF document text
    • http://xaxelajifamukas.rf.gd/65529829949.pdfIn PDF document text
    • http://kudogal.rf.gd/tisuvagigavifazisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7530579-8be2-4111-9097-2aa708c8ec57/80175045398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86adfd75-f1fe-4d22-be2a-1c7d9015c66f/how_long_to_become_a_small_engine_mechanic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/021502a4-08ca-4c76-b0fb-f94d2894c5db/baby_groot_dancing_toy_for_sale.pdfIn PDF document text
    • http://taxowojo.epizy.com/semozidovinufemek.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/xemotodikekejibe.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_off0000f624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF624 4836 bytes
SHA-256: b3d7e17f59d0ca2d960edaacd826b819643b5550b8cd3252de00b00bf1c2bc43
font_01_sfnt_off0001068b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068B 11308 bytes
SHA-256: 8686c0d33eae7e3e7a637459d684063eb07f0e9b92491db8fe1c65e3c54a1448

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