Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe86300a787308f…

MALICIOUS

PDF

81.7 KB Created: 2021-03-19 00:12:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d7fd589f5fe5d48b67fc26e4ecd3e505 SHA-1: 5c257248c6bbc6295437bb9a9d380cfeb9eda950 SHA-256: 8fe86300a787308f2cee107199ccb2cd7303a7c2078a23282f1332a6d4ee5646
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • 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 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://resalured.ru/award?keyword=arduino+328p+datasheet+pdf PDF link annotation
    • http://dirtygirl.fun/are_acer_laptops_worth_buyingvgdw9.pdfIn PDF document text
    • http://busforpay.online/memory_stick_compatibility_cameras5792k.pdfIn PDF document text
    • http://glasshookahcatering.com/gugunipesifukevapjq79o.pdfIn PDF document text
    • http://zimezobot.getenjoyment.net/kitchenaid_induction_range_with_double_oven.pdfIn PDF document text
    • http://sejujijowevazuk.iblogger.org/66411762473.pdfIn PDF document text
    • http://oneplusonemain.xyz/honeywell_rth2300_rth221_wiringlqk83.pdfIn PDF document text
    • https://tedibijufu.weebly.com/uploads/1/3/4/6/134678634/2797829.pdfIn PDF document text
    • https://sevezumu.weebly.com/uploads/1/3/2/7/132710575/tomuw.pdfIn PDF document text
    • https://wibosopepizasu.weebly.com/uploads/1/3/4/3/134332643/9bcf94.pdfIn PDF document text
    • http://baltika-trans.com/download_murottal_abdurrahman_sudais_mp3_alquran_full_30_juz_rarlrxqp.pdfIn PDF document text
    • http://smartcreditscore.info/baaghi_2_videoetz9v.pdfIn PDF document text
    • https://rinuvigilositu.weebly.com/uploads/1/3/4/4/134463450/017fb174.pdfIn PDF document text
    • https://tineminelebon.weebly.com/uploads/1/3/1/6/131606156/1657368.pdfIn PDF document text
    • http://openchambre.xyz/pet_sematary_2019_trailer_deutscha2t6s.pdfIn PDF document text
    • http://vehicleusains.com/symbols_in_act_1_of_romeo_and_juliet6ii6e.pdfIn PDF document text
    • http://cadenalia.com/first_aid_usmle_step_15yzp6.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://koluriv.rf.gd/pdf_text_editor_free_trial.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/gawazedobixojutof.pdfIn PDF document text
    • http://lodumojokexiku.onlinewebshop.net/tazuwudetajegenubaw.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/jisukakelojaruvodi.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/gixapebepatuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/nixiramabuj.pdfIn PDF document text
    • http://sazojojuw.rf.gd/fuwaduxofokofagebejo.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/clarion_call_define.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_off0000f744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF744 1764 bytes
SHA-256: c8080e5baf5ad9c7fbc13afa524d6bc25c7ea6237ae1b210f1cae62564774a09
font_01_sfnt_off0000ffe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE2 5576 bytes
SHA-256: 7a5b82de4eef8f51c9df1e8b1d4b99387a78190b64da425efa8c64ecc65777a5
font_02_sfnt_off000112d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112D5 10728 bytes
SHA-256: 16ea6bf7375ef9feaadbdbfd7736985a4216ae0efd7948815161a4bf1917af8e

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