Malicious PDF — malware analysis report

Static analysis result for SHA-256 6071405bb200fa19…

MALICIOUS

PDF

74.6 KB Created: 2021-01-19 07:59:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 91fb9762506a634e4d25fbe1dc733a1b SHA-1: 61e08a782cc879716207653edbfcd3cb3556e426 SHA-256: 6071405bb200fa194986ca7c0ed0f8a5eb687d56d79763a51612a880b404fc7f
212 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • 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.
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=simple+delivery+note+template PDF link annotation
    • https://site-1180799.mozfiles.com/files/1180799/mowubukinefegagokilop.pdfIn PDF document text
    • https://site-1208026.mozfiles.com/files/1208026/vupavamekudirafodufomoxe.pdfIn PDF document text
    • https://site-1177025.mozfiles.com/files/1177025/mixegifo.pdfIn PDF document text
    • https://site-1180237.mozfiles.com/files/1180237/31639980139.pdfIn PDF document text
    • https://cdn.sqhk.co/womibakok/I80jcia/marvel_comics_online_app.pdfIn PDF document text
    • https://site-1168325.mozfiles.com/files/1168325/fujugobekamepozuwedutizo.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/YLhjcge/tedufofuvofeputarujanex.pdfIn PDF document text
    • https://site-1177153.mozfiles.com/files/1177153/best_emergency_siren_sound.pdfIn PDF document text
    • https://site-1217518.mozfiles.com/files/1217518/chamma_chamma_dj_song.pdfIn PDF document text
    • https://cdn.sqhk.co/kevuviwa/ihhfMcw/foodpanda_rider_app_download.pdfIn PDF document text
    • https://pozufijuxib.weebly.com/uploads/1/3/0/7/130775557/potuxelemojajik_riwipum_ruvipezopi.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/jBjf7id/calgary_stampede_chuckwagon_races_on_tv.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/punagilelabon/79571878686.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/77272532343.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/video_recording_software_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/28348319463.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/turoragosobatoni.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/barotrauma_for_mac.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_off0000e892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE892 5192 bytes
SHA-256: 106eac35052f92f00ac4b1d36ee9be772bb8c0caabefecfad11b94f61077d46c
font_01_sfnt_off0000fa2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2E 10432 bytes
SHA-256: 0cd2cc2ec9e01e38aee2b65fb0ed07b6c09ca11e44a4e5e109eb6182d41bf0e7