Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f4d2b0cc78789ec…

MALICIOUS

PDF

61.0 KB Created: 2020-12-15 15:50:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 99f614d4a8f542de3830e44d7e0b23f6 SHA-1: 93636f90b57f479b671b63327c659223f6ac12a0 SHA-256: 2f4d2b0cc78789ec929a412f716cf9758269a8ac8643b6a9d0e62f6d885e8e9e
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a PDF SEO link farm. The primary malicious URL observed is https://trafffi.ru/123?utm_term=st+helens+library+tasmania. This technique is often used to distribute malware or phish for credentials by directing users to compromised or malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent.

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 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.
  • 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://trafffi.ru/123?utm_term=st+helens+library+tasmania PDF link annotation
    • https://xaverawigidun.weebly.com/uploads/1/3/4/4/134437914/nugoso.pdfIn PDF document text
    • https://rakevuxex.weebly.com/uploads/1/3/4/0/134040666/8974265.pdfIn PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/8728981.pdfIn PDF document text
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/9585085.pdfIn PDF document text
    • https://poxanopa.weebly.com/uploads/1/3/4/3/134380657/juzamuvawid_numilagerawuto_paveb.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/pejimaxasugat.pdfIn PDF document text
    • https://mupawume.weebly.com/uploads/1/3/4/3/134365579/foruwodomebogota.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/8ac45630-12c6-440c-a34b-762fdf4fc098/grundig_shortwave_radio_s450dlx.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc726861c59a74bd98f103d/t/5fcce541920f47545b93f72f/1607263563063/nojomoxabulizatiwibutuf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc37266abaecd331832648e/t/5fd05f215ec17a4c668fd644/1607491362760/wapapojozijomimutoxejulum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed4f1452f90b7fe57e24/t/5fc276ab9ee0f32b87a2a9d2/1606579888079/buttered_side_down_firework.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17a02e2fce462bc900607/t/5fc969a6ed280e32aa82c088/1607035306411/tajolabubofitonokojes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce3634ecb86110b136d536/t/5fd015be12264b5dfdbf015c/1607472574923/jijarabadoze.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5720fc6229360eccb86af/t/5fd70528de5b1220c04152dc/1607927084710/72531427223.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/tujijelexaburavotufigozus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdefff4a55824081a4bbfc/t/5fd0ff65b7216a3b31b2cad5/1607532389883/me_pongo_nervioso_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e1e5991-fb4a-457b-9311-bf1f24f97f95/persona_5_lovers_confidant_location.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_off0000b372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB372 5272 bytes
SHA-256: 0dfb655f2ada399bcc9ba9ba1a865728c786786b85772d48e89a23ab464e1fd6
font_01_sfnt_off0000c534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC534 9992 bytes
SHA-256: 14a6caf5cf6b2ba4cc9c92399f44dd096432aaac366376830a7c928a5497b698

Open this report in the interactive analyzer, or submit your own file for analysis.