Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac79004c4f2816a…

MALICIOUS

PDF

72.7 KB Created: 2021-03-08 04:57:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 53a6ec0cac0f0c586b1dbf9dcbe4ccd0 SHA-1: d223fe5edc314b5efa9b4ec4fda3804791741f72 SHA-256: 1ac79004c4f2816a2e82d896f0942dc8066a708264a76fb35d30aa4ecdcd0cdf
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/wix?keyword=slope+games+76 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421460/normal_5fda26b8017aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366316/normal_5ffb692353529.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459628/normal_60374d392a9b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381340/normal_5fd8a20eef4c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480886/normal_5fe6e17b1e36c.pdfIn PDF document text
    • http://trellos.fun/93604104327tzf1t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485149/normal_5fd27988bd266.pdfIn PDF document text
    • http://216tilford.com/woodsmith_downloadsekfri.pdfIn PDF document text
    • http://idealica-italiaoficial.site/zonegikojumofejubadiwutuno928.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450730/normal_5fcb78906e30a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466370/normal_5fe4424251991.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/sepawi/boy_scout_merit_badge_pamphlets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4377198e-c5f4-4d69-aa9e-b1cc3a2bc55c/tobobobavukutobip.pdfIn PDF document text
    • https://03386fec-e341-46be-bf9f-2f2bd19f9bfe.filesusr.com/ugd/bf57b5_a480359e6ab74c25acda67b533057903.pdf?index=trueIn PDF document text
    • https://9610c43f-1b2a-4a8a-b660-75aaf3908198.filesusr.com/ugd/286fb8_99939f63540446c29dd6221fc20cecf6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gewisetug/fogiwiladatemorukiledijog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bae499bc-ffc8-452a-90ab-628f11f4ff7c/wupobezokoru.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/livro_de_salmos_hernandes_dias_lopes.pdfIn PDF document text
    • https://835a0401-7144-467e-aacc-710587930ffc.filesusr.com/ugd/432cba_397f4b759cd144189df38e0bbb1d2949.pdf?index=trueIn PDF document text
    • https://45180a89-8b92-4d54-a4c6-cdf0ad6af3c7.filesusr.com/ugd/2b98a3_dd9bcb384e7e47bd930feef5c30db2b2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bf64777-d07a-4d82-a34f-0408ef8a0b34/florence_scovel_shinn_audio_books.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_off0000db39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB39 5380 bytes
SHA-256: ac3f028e536dea3c084b1492a2bfce99fc90ba7edf99c57230bbf48ea947b0ff
font_01_sfnt_off0000ed80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED80 12684 bytes
SHA-256: f011903a7b3b1a3825d69350f8baba4aad66c36830d6dc46d4e3c1210239464f

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