Malicious PDF — malware analysis report

Static analysis result for SHA-256 74db29e953e09188…

MALICIOUS

PDF

71.0 KB Created: 2021-02-26 23:49:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 231da46074b1ccec203e62710d427d3b SHA-1: 7471770c8c312239aa7ccaff88fd6ed9d0fa48b4 SHA-256: 74db29e953e09188c22ea7b0f98984150bc59ff27b37a6ef8a42b929dd2b419e
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://botokaw.ru/award?keyword=how+to+reset+cisco+voicemail+pin PDF link annotation
    • https://xavapijiwo.weebly.com/uploads/1/3/3/9/133997403/wijaterafugifan_kakubuf_nanakozule.pdfIn PDF document text
    • https://sejexogubason.weebly.com/uploads/1/3/1/0/131070030/fakoluvuter.pdfIn PDF document text
    • https://cdn.sqhk.co/pimupigedu/3Ef2jfS/police_counter_terrorist_attack_mod_apk.pdfIn PDF document text
    • https://kevulukopefot.weebly.com/uploads/1/3/1/4/131453006/ledaz.pdfIn PDF document text
    • https://nedovewa.weebly.com/uploads/1/3/5/3/135316636/fc8e7f4.pdfIn PDF document text
    • https://cdn.sqhk.co/juxajomuz/hfd04ia/sisizawesazujuji.pdfIn PDF document text
    • https://xikobidena.weebly.com/uploads/1/3/6/0/136097244/gubijifafibilozi.pdfIn PDF document text
    • https://xifugewelude.weebly.com/uploads/1/3/4/3/134353264/6870997.pdfIn PDF document text
    • https://sufudoni.weebly.com/uploads/1/3/4/8/134853368/zunavorurewekoxozid.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/0hg1gem/10043997916.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/idhhAXx/56665993722.pdfIn PDF document text
    • https://cdn.sqhk.co/gikazijegut/gcaiggg/unblock_me_premium_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/RZVj3ie/pokemon_quest_recipes.pdfIn PDF document text
    • https://lobejimore.weebly.com/uploads/1/3/1/3/131383478/tabatalefure-fesukeze-febojerula-bijowipilez.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/zuses/sample_projected_balance_sheet_business_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/zavale.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/android_bypass_proxy_for_local_addresses.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/fyuse_3d_photos_app.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_off0000d8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FC 5192 bytes
SHA-256: 2c531512c36cb5490c230341364e660d40630b947f2b4fb51db04b90cb8b047e
font_01_sfnt_off0000eaa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA0 10640 bytes
SHA-256: e66399b5e93d03a52ac7702a89f613c8755b790c11473823b0f66a34a011ea45