Malicious PDF — malware analysis report

Static analysis result for SHA-256 8133fb592b29f880…

MALICIOUS

PDF

51.6 KB Created: 2020-10-23 18:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7968453c25e666eacfc340c2b1a25ab3 SHA-1: 0648b5dceb43d4efeb297581693450e2475bb9fd SHA-256: 8133fb592b29f880cb6907fa07ab22f85c918f1f5808e7c1546b8f6231908be7
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/123?keyword=barbossa+is+hungry+piano+pdf In PDF document text
    • https://xovadodelemowuz.weebly.com/uploads/1/3/1/3/131383330/551f18a1.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/pasifoxixugererupew.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/a0d6a0aebc3d.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/6388709.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/jopawogodowi-kawekaseb-vimani-xuwekir.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/bosudopepiv.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/jipadajiwul-bomogu-begotesek-dibirulixipox.pdfIn PDF document text
    • https://runebipunozup.weebly.com/uploads/1/3/1/4/131406604/9871009.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/64d5146.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e48.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e48.bin)
    • https://cdn.shopify.com/s/files/1/0484/0659/3696/files/bapefoxakabegezanoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/zerojobifix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7509/1614/files/xulewamevonadorujibixol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4091/5615/files/43894278186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6243/4210/files/69104894743.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/68896953426.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/brunnstrom_s_clinical_kinesiology_6th_edition_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/student_centered_learning_strategies.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/taxotisesukasaxonamig.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/nato_phonetic_alphabet_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/5054179237.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/bubuvolizoroju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f961c5ff-5909-4418-92aa-58bb807e476f/melolalozepuwesuvizupez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ed302e3-e0e4-43da-ba79-4314bcad0f41/wijilabadafuxuzikigufase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4d358f4-855e-4bed-9832-8a8f408d5575/arte_nuevo_de_hacer_comedias_en_este_tiempo_caracteristicas.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 extracted file (font_00_sfnt_off00006e48.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000aa2f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000aa2f.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E48 5564 bytes
SHA-256: 8ee7a6928e3e5404fe352c39eba00e7f77840ae21a76c30ed7275fee3fa3aa1f
font_01_sfnt_off00008131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8131 12792 bytes
SHA-256: 0daaf4cb9ff6ed66a49c6eea2bf72b01d70fe513c5d1ef7bce19eab4b7870c85
font_02_sfnt_off0000aa2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA2F 16120 bytes
SHA-256: 2cfc97915d250804213c9b0e6ad261e0979cd38371fb36ec9174dea58a153a3e