Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17895b14bc84d55…

MALICIOUS

PDF

71.0 KB Created: 2021-02-18 05:37:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b8d8f8f3c478bcec853682f17ff26fca SHA-1: d30e0d2eb0c78a1cc4e19f5b657ac9aa1d34fea7 SHA-256: f17895b14bc84d551a2b6f9118e0f4187199a0f74925817a06b9105f158d5ee3
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://jottigo.ru/wix?keyword=minecraft+pe+15.0+apk+indir PDF link annotation
    • http://shopsmmv.site/86384321844ad5y6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413696/normal_602cfceb158c7.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/97ifjiC/parofulexomofebodubonad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_600fb14281a13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487905/normal_5fc64c238975c.pdfIn PDF document text
    • https://momiretet.weebly.com/uploads/1/3/5/3/135345559/2262776.pdfIn PDF document text
    • https://cdn.sqhk.co/xovenekot/Mgc8JDV/snes_mini_hack_ebay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491414/normal_601486011b388.pdfIn PDF document text
    • https://giruwaferelesed.weebly.com/uploads/1/3/4/8/134850821/donebo.pdfIn PDF document text
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/texifipajari.pdfIn PDF document text
    • https://lurevovikofa.weebly.com/uploads/1/3/4/6/134693735/xibejaxikuf.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/gfjd8ie/pofijomejuk.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/bivanud/dorexofas.pdfIn PDF document text
    • http://lafebevu.rf.gd/against_the_odds_magazine.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/chal_mere_bhai_songs_ming.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/jaani_dushman_full_movie_video.pdfIn PDF document text
    • http://javozajesaretu.epizy.com/96609929622.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/examples_of_formal_agencies_of_social_control.pdfIn PDF document text
    • http://lirinuguwe.rf.gd/brindisi_report_incidente_ferroviario.pdfIn PDF document text
    • http://vefagukolile.epizy.com/parudivumime.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/59178019435.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_off0000d943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD943 5356 bytes
SHA-256: 2f3db8e66db902185b48436db00f681bd00ef0a081900254faa23edb7ebcae4b
font_01_sfnt_off0000eba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA9 10276 bytes
SHA-256: b7d2edd6c54233872256a20a715e999cc33d374b0f1207da8fdad21dd898ea03