Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc228f945c74092…

MALICIOUS

PDF

73.4 KB Created: 2021-02-20 22:40:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 731a3e96ac71693a0286ac130bd8544f SHA-1: ae66a116c5a64de57823281c787498889e469930 SHA-256: 0dc228f945c74092ab17be298ec50cb385f0a24fe185f6563067d5b157525ebc
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jottigo.ru/wb?keyword=attach%20a%20voided%20check%20for%20each%20account%20here PDF link annotation
    • http://varnisvakq.ru/fobepuloluloaib6j.pdfIn PDF document text
    • http://goodshopsales.xyz/6708526687010228.pdfIn PDF document text
    • http://drovazvenigorod.ru/pre_algebra_assessment_testqkkwv.pdfIn PDF document text
    • http://startask.ru/20870060144jl9d4.pdfIn PDF document text
    • http://vekeludin.iblogger.org/75602267186.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/sojebelevenex/77776050120.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/bending_in_beam_lab_report_uitm.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/latex_poster_template_a1_portrait.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/97561500325.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/bejeweled_2_soundtrack.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/chrome_speed_too_slow.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/gakidoferofa.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/panasonic_answer_machine_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/google_android_device_manager_password_reset.pdfIn PDF document text
    • http://nizexududitew.epizy.com/algo_trading_platforms_best.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_off0000e357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE357 5012 bytes
SHA-256: a98977755ae56f4d0452e1cb5d7874b8d870a65df20d3dea226befb2107f4cd9
font_01_sfnt_off0000f46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46B 10632 bytes
SHA-256: adaf58141fdc2541093697bb16d770df14da66dc59f82150974bbd364acaddc3