Malicious PDF — malware analysis report

Static analysis result for SHA-256 be198f0439f5dcaf…

MALICIOUS

PDF

64.0 KB Created: 2021-02-07 14:47:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1a8a511ab00da32fc88da953fdd68b3e SHA-1: fee2a3275d1d2efa8df704347e8ba2d4c0226336 SHA-256: be198f0439f5dcaf39adf4dbf9c6b3eb0e08186963e3ee1bf84585fd87238ee5
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://druttle.ru/wb?keyword=avery%208167%20template PDF link annotation
    • https://zijolafazul.weebly.com/uploads/1/3/0/8/130873795/zatuwujopazew-wukagamuzikaf.pdfIn PDF document text
    • http://wedejopejujotu.iblogger.org/basara_2_heroes_dolphin_emulator.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/double_death_drop_drag_raceg52vy.pdfIn PDF document text
    • https://nonewogigej.weebly.com/uploads/1/3/2/6/132681399/b2b1ebbe6.pdfIn PDF document text
    • https://xiwabedosebu.weebly.com/uploads/1/3/1/3/131398066/lexofomafud_menobaweluvena_vapamidetigukat.pdfIn PDF document text
    • http://simcars.ru/20935582062r7tua.pdfIn PDF document text
    • https://kitijudaxedefex.weebly.com/uploads/1/3/5/3/135350735/mefap.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/zetituri/microsoft_azure_stack_licensing_guide.pdfIn PDF document text
    • http://tuvalej.epizy.com/last_player_survival_battleground_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/vetobajud.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/79617320072.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/30969731151.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/gabumubetidi.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/professional_software_developer_cv_template.pdfIn PDF document text
    • http://milazadizuwi.rf.gd/greenstone_mall_shop_guide.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_off0000bc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC41 5416 bytes
SHA-256: 2a46f48fd94bc6fde082979d4a21056d7428c5f254f6ecb5d5be803b0073a3eb
font_01_sfnt_off0000ceb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB3 10876 bytes
SHA-256: 90a12791650f93a968cfb79af7f91bd38649690ba31139e536c17da619e49644