Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc13d068f1d9aa4a…

MALICIOUS

PDF

70.8 KB Created: 2021-02-16 06:33:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 6f84b8c08acc7be614c76044a62a534c SHA-1: f65f504015fad97c6e2f12bcddb368647a776b67 SHA-256: bc13d068f1d9aa4a5dde168be6d8a7b9a1edf1344af0c1cf08b64b911ca775c4
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/wix?keyword=information+technology+project+management+fifth+edition+pdf PDF link annotation
    • https://filuloxi.weebly.com/uploads/1/3/2/7/132740414/6122906.pdfIn PDF document text
    • http://nugekurobeju.iblogger.org/dreamweaver_software_for_windows.pdfIn PDF document text
    • https://cdn.sqhk.co/xafileme/TjhgcAC/greatest_hits_songs_of_asin.pdfIn PDF document text
    • http://towajemikof.iblogger.org/pediatric_hypertension_guidelines_nice.pdfIn PDF document text
    • https://vaxunupix.weebly.com/uploads/1/3/0/7/130775436/5349531.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478951/normal_5fe38f51a6c90.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/i7o1Ugh/buper.pdfIn PDF document text
    • https://kezidixujaroko.weebly.com/uploads/1/3/4/0/134040737/vufegutafaweso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wubulinefoz.rf.gd/al_fajr_clock_manual_city_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/sticker_whatsapp_islamic.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/abbyy_finereader_12_keygen.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/black_and_white_hexagon_sheet_vinyl.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/laverne_and_shirley_theme_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/funiroxozejojedudetobe.pdfIn PDF document text
    • http://dalotatafajadad.epizy.com/birapu.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/guided_loving_kindness_meditation_sharon_salzberg.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_off0000d714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD714 5508 bytes
SHA-256: c52488f547943c63ef1b183a55b450afdc8f62dbd8f94d58bf6b65ff3ab872ae
font_01_sfnt_off0000e9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B3 10612 bytes
SHA-256: 37d85a842228fd4263aea7f6a3ea43b2f7ad4ca578d990beb3a1c2647f012c1c