Malicious PDF — malware analysis report

Static analysis result for SHA-256 560e074a32cc354c…

MALICIOUS

PDF

76.5 KB Created: 2021-03-25 18:20:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 88a43bab35ebf871c352b53d4a8e1162 SHA-1: 719be537f28b940a31f16022d7059000da5b8c37 SHA-256: 560e074a32cc354ccef40af94be2b98d97e0af626afe0b86fafd14cba1af2baf
66 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 0.9997

Heuristics 4

  • 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://baarspo.ru/wix?keyword=middle+school+volleyball+camps+near+me PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421612/normal_601f549e3f79e.pdfIn PDF document text
    • https://cdn.sqhk.co/zanudiwageg/3PhdBQn/pot_stickers_pork_and_prawn.pdfIn PDF document text
    • http://pidagenavuziw.mywebcommunity.org/sowomatetepoxepi.pdfIn PDF document text
    • http://afracheat3.xyz/gefosojafexoz6wywf.pdfIn PDF document text
    • https://cdn.sqhk.co/sufipuxifemo/ghgfLjc/paketubakapileduburik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465403/normal_600e5ea7743fc.pdfIn PDF document text
    • http://xirijapip.mypressonline.com/94264216374.pdfIn PDF document text
    • http://rabemedexisubis.mygamesonline.org/74219746946.pdfIn PDF document text
    • http://gepexoliv.medianewsonline.com/tudixadifitafef.pdfIn PDF document text
    • http://smartradiobf.ru/certbot-_auto_certonly_manualojvcv.pdfIn PDF document text
    • https://fitisajinuno.weebly.com/uploads/1/3/0/7/130739553/8309503.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/hXOggif/free_download_mike_v_skateboard_party_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/2VGgjQp/super_smash_bros_ultimate_smash_ball_spirit.pdfIn PDF document text
    • http://gtmedis.com/xfinity_cable_box_not_showing_all_channelsevu44.pdfIn PDF document text
    • https://bagopilijesab.weebly.com/uploads/1/3/1/4/131438775/gufasupow-dabadez-zuwurudumeduzif-winopoxegudot.pdfIn PDF document text
    • http://liwitesuzemumex.sportsontheweb.net/47007661335.pdfIn PDF document text
    • https://zafudibibini.weebly.com/uploads/1/3/4/1/134108698/xiregur.pdfIn PDF document text
    • https://cdn.sqhk.co/zadexona/CJhfJjg/monument_valley_az_lodging.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/timeziso/59971976603.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/votejasebobotamuxej.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/philips_tv_manual_remote.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_off0000ee27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE27 5620 bytes
SHA-256: 76ad7597be6e85a60dabfc43a898c4aaaeb26995d473158e8d4a87709e6512c4
font_01_sfnt_off0001012d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1012D 10456 bytes
SHA-256: 7307a2049e9659c01ef6d55f1c9f4452d2c1b9cb21ad8874de3db7dbf24e3fcc