Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d9108512fece7e…

MALICIOUS

PDF

81.6 KB Created: 2021-03-28 21:25:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 582657181a0b6a95720b4c599322cebd SHA-1: f0846771b5975151ef783c8ada6bfb953ad54dd4 SHA-256: d7d9108512fece7eaf5cdb93da256ccb33a0db53f5eccc49f2c1db1f32e7ae67
96 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary focus on a URL related to 'nordictrack a2105 treadmill price'. This suggests a phishing or scam attempt to direct users to potentially malicious websites. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://pelibifir.ru/strik?utm_term=nordictrack+a2105+treadmill+price PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418370/normal_6003ce3c68370.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485826/normal_5fe34ac1370c5.pdfIn PDF document text
    • http://passive-income.ru/37342550314qcoiz.pdfIn PDF document text
    • https://lejoxenususoja.weebly.com/uploads/1/3/4/4/134497781/880ee12.pdfIn PDF document text
    • https://pebewaviwukak.weebly.com/uploads/1/3/4/4/134463457/memavesesoso-nenekasutak-zasojivejur.pdfIn PDF document text
    • http://copyrightnotice-ig.com/vomirifugomulekuvifep0nzjy.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/21165280147jpose.pdfIn PDF document text
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/3373272.pdfIn PDF document text
    • https://bozobazevadetob.weebly.com/uploads/1/3/1/6/131607158/f75b25076cc35.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
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_e66a25fafbec46f3a97b79fffc238f2e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/anganwadi_bharti_form_last_date.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/fumegoxerugobowibejotepu.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/el_llano_en_llamas_cuento_analisis.pdfIn PDF document text
    • https://ba3a7bb5-edd2-4228-b29c-cf272df6a868.filesusr.com/ugd/bd1c09_15bd63dd411b4efa909fb5470e7fadb9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/26968004114.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/sch_let_s_learn_english_book_2.pdfIn PDF document text
    • https://63995da9-74be-4895-8497-a4fa53c9845d.filesusr.com/ugd/788c84_5bc1acfee9534a868387bfa946f51c81.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tokudapele/ascii_code_hex_converter.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/verbal_reasoning_questions_and_answers_for_infosys.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/wejesifadikapiwusaxad.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/78418730039.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_off0000f301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF301 5204 bytes
SHA-256: 2be7de7b22573aa71aa45b64b42d7ae33a04c90c644f9555a0b53d47591207de
font_01_sfnt_off000104c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C5 11376 bytes
SHA-256: 127941c0ddf158925c1a53b3e6275ffa67c7608bcffecdb52aace3524eee04f4
font_02_sfnt_off00012b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B24 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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