Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2acefb0b0047c1…

MALICIOUS

PDF

71.8 KB Created: 2021-02-14 00:51:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 44f2a24963bbd0e96f008419fe2db53b SHA-1: c229f3b5c22ac6387124f1c3e4324be5ea30f602 SHA-256: 9f2acefb0b0047c11e1fed268a2e9f4ac77263693f0d412dd1b0b023299e2081
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://baarspo.ru/wix?keyword=that+would+be+great+in+french PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489732/normal_5fda3ba1f2801.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454990/normal_5fcf2dab81408.pdfIn PDF document text
    • http://storeplus.pro/wofuwoziwudopgbaso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459788/normal_5fff4d0173763.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379856/normal_5fe4382f0ae7d.pdfIn PDF document text
    • http://trackcreditscore.info/bloons_td_6_10._0_apk35eop.pdfIn PDF document text
    • http://pugajuxo.iblogger.org/bps_continuation_sheets_2018.pdfIn PDF document text
    • http://terubib.22web.org/apache_tomcat_windows_10_64_bit.pdfIn PDF document text
    • http://detonic-ro.website/zodopojvf0c.pdfIn PDF document text
    • https://dipalowijoje.weebly.com/uploads/1/3/0/9/130969855/sanijos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuxeretufem.rf.gd/69146614893.pdfIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/california_weapons_laws_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/free_christian_funeral_service_program_template.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/beauty_and_the_beast_full_script.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/47327556255.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_off0000d999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD999 5288 bytes
SHA-256: 8148a60918aa463363fc0f3390db871a10ac7fdc1e4ef2c1b56d533608a9cc84
font_01_sfnt_off0000eba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA1 10892 bytes
SHA-256: 682beef2eb655974414030be604c8edaf6c9c831f20ab73638cb1d7f4807b1a4