Malicious PDF — malware analysis report

Static analysis result for SHA-256 aabf9abb53037a35…

MALICIOUS

PDF

68.0 KB Created: 2021-03-05 08:13:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c67f1a825b82bd92e349ab4540a57cd7 SHA-1: 0ab46934a0f43de542085b046a74f042d21c7e65 SHA-256: aabf9abb53037a3596d857d2af663ee99416a76da3befa95803500c5dedc347b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://dugedepap.ru/wix?keyword=download+accounting+principles+11th+edition+pdf PDF link annotation
    • https://cdn.sqhk.co/makevefix/ghXtXid/rise_of_kingdoms_best_epic_commander_pairs.pdfIn PDF document text
    • https://gizumefelaz.weebly.com/uploads/1/3/4/3/134318195/donuduroru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367947/normal_5fefa4d94ba41.pdfIn PDF document text
    • https://cdn.sqhk.co/kewebogi/cPYa3ia/maserati_quattroporte_price_philippines.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384154/normal_601110d40008d.pdfIn PDF document text
    • https://cdn.sqhk.co/kowetitemaro/UHhdjfF/dragon_kingdom_online_game.pdfIn PDF document text
    • https://cdn.sqhk.co/xusarukave/jboK4jx/24031109037.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446507/normal_6004016d2d7e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494431/normal_5fdb56489b94e.pdfIn PDF document text
    • https://cdn.sqhk.co/noluxokeruma/dgihfij/gixutepuvadadigunaliko.pdfIn PDF document text
    • https://sopoxovolofu.weebly.com/uploads/1/3/4/5/134509961/6438182.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/efd9073a-77d2-47cf-9a7d-dad3a6a1e24d/does_burger_king_have_a_2_for_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50a7187f-c71d-472e-bd6e-382e7e5003e1/macys_employee_handbook_2020.pdfIn PDF document text
    • https://0bdb67af-4c57-4a6e-9706-714cc80719f5.filesusr.com/ugd/fc840b_5456d665f7f5450a908d81d9a9f7cb36.pdf?index=trueIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_21a4fdfc19494e2fa13038e31b19e23e.pdf?index=trueIn PDF document text
    • https://058da8ce-bb30-4b8c-81eb-8903018cac65.filesusr.com/ugd/ab745b_a0ae52f6ee5d4d999f1200734c66beea.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b43a75ee-d041-4ce9-9ec4-81b8fb5772bd/xidadevewemiwuzolaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dce9b97-e7f3-49f2-a353-07a98866c5c4/unix_shell_scripting_tutorial.pdfIn PDF document text
    • https://18aefb47-0221-41c7-ace0-4f78eb33e730.filesusr.com/ugd/bca722_dc38a962df164caba4cb04d27b3cd164.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bb011d6-084a-401f-8abb-1a4aa40e8fec/how_to_buy_perfect_money_with_debit_card.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_off0000cd37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD37 5560 bytes
SHA-256: cc8df496d0611584b2c255f16488a029dee4e811749fd545699608d0117ac9f2
font_01_sfnt_off0000e03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03C 9992 bytes
SHA-256: 1bdbc1cc0534a3a9a151a7e770d9103e437cd1ece06d10144146c437ab872c2d