Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5566b62da2bd501…

MALICIOUS

PDF

72.6 KB Created: 2021-02-25 18:38:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f38f2f1e9d848b8aa23eb6a42b5ea96b SHA-1: 75b7fb6c63ec3847cd6b860ae4e9ff23fdfcd689 SHA-256: a5566b62da2bd501f67245464add7483d9ca05b0f4822885283e52822048f2c1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://druttle.ru/wix?keyword=brown+service+center+minden+la PDF link annotation
    • http://runolive.com/best_gba_emulator_android_freex2vpt.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/jedunamisudujufevu.pdfIn PDF document text
    • https://pevaluxuduta.weebly.com/uploads/1/3/4/5/134502983/bdda6.pdfIn PDF document text
    • http://dsv-trening.ru/vanefakepemivepavevfjn42.pdfIn PDF document text
    • https://tadilagene.weebly.com/uploads/1/3/1/3/131381422/ralulufofuno.pdfIn PDF document text
    • https://kokujilu.weebly.com/uploads/1/3/1/4/131453241/3a729f7017ac0.pdfIn PDF document text
    • http://autocredit.moscow/differences_between_excel_and_google_sheetsbeihg.pdfIn PDF document text
    • https://pofomagod.weebly.com/uploads/1/3/1/4/131483550/ginuwa.pdfIn PDF document text
    • http://importants.space/bodybuilding_diet_and_workout_plantqjmy.pdfIn PDF document text
    • https://vamemaxodoj.weebly.com/uploads/1/3/1/4/131437173/3864300.pdfIn PDF document text
    • https://musonilemif.weebly.com/uploads/1/3/4/7/134752032/1e9af.pdfIn PDF document text
    • https://rupogasonewu.weebly.com/uploads/1/3/4/6/134653860/mobijiwedefewef.pdfIn PDF document text
    • https://noduxulab.weebly.com/uploads/1/3/4/9/134901810/834ae2.pdfIn PDF document text
    • http://elerctum.org/cash_app_sign_up_codeukqta.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
    • http://kofaxafogi.myartsonline.com/94606459754.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD265 5072 bytes
SHA-256: 14ea12a8d34f596ada45078a07af7a1af26d68fa0c8147e258945465dfe88640
font_01_sfnt_off0000e394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE394 10288 bytes
SHA-256: 3b6d7df14ea93bb9c388e4632ab38341772500fb7ab62a23e6622a239d054d79
font_02_sfnt_off000106e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e