Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f3a86db71d491f…

MALICIOUS

PDF

84.3 KB Created: 2021-03-14 04:05:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 01799d9af1e4cf1cac6a2b835a3797c5 SHA-1: c2f417563ed2bf17f5a585cf6e93d3f3ccaf3961 SHA-256: 03f3a86db71d491f47e9aaaedb27a9163570d3ec34740798ce03891fb2139d5e
156 Risk Score

Malware Insights

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

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 0.9998

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://maypoin.ru/award?keyword=carol+ann+duffy+valentine+pdf PDF link annotation
    • http://puvinizozibejir.mygamesonline.org/zlatas_diary_quotes.pdfIn PDF document text
    • http://pivojowemetobiv.mywebcommunity.org/catatonia_treatment.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/jazz_guitar_fake_book.pdfIn PDF document text
    • http://zovofuti.mygamesonline.org/how_much_does_a_gas_oven_igniter_cost.pdfIn PDF document text
    • https://fapudunaga.weebly.com/uploads/1/3/0/7/130776769/7624008.pdfIn PDF document text
    • https://mugevodotigo.weebly.com/uploads/1/3/0/7/130740084/5259784.pdfIn PDF document text
    • http://midadef.iblogger.org/roll_over_to_zoom_troy-bilt_gasoline_edger_25a-516-766.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/welanisowari/47073770444.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/photo_background_changer_app_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/tabla_conversion_mm_a_pulgadas_fraccionarias.pdfIn PDF document text
    • http://jinoratizoja.epizy.com/ibm_aix_7_certification_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/gemapi.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/igo_maps_2017_europe_free.pdfIn PDF document text
    • http://tuwesexo.epizy.com/84834295957.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_off00010e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E5B 4924 bytes
SHA-256: 7d9cee1c03012a865fedf3980c99b5663687b9942ef1c2de6f3a356013f090ad
font_01_sfnt_off00011f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F3B 11028 bytes
SHA-256: c6cd4620898b7ff123d085a8fccc85ef77a317b6f601dce70a9d372d9759ec0a

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