Malicious PDF — malware analysis report

Static analysis result for SHA-256 22f35a7f124f90e1…

MALICIOUS

PDF

68.8 KB Created: 2021-02-26 14:48:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7cd6e3cc5a2169aaa2a4c17af608cb7a SHA-1: e9b4b70c358fc9e621520e52582bdf177a6fca84 SHA-256: 22f35a7f124f90e1415b7b4a5c76125d08d2cc7fdb5fdfd9d9c63b5acf8addf5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://lozipotod.ru/award?keyword=elements+of+music+emo+rap+download PDF link annotation
    • https://kekebamifibem.weebly.com/uploads/1/3/1/6/131606854/japot.pdfIn PDF document text
    • https://cdn.sqhk.co/delopomixaba/l9cggih/412348782.pdfIn PDF document text
    • http://rutekotugu.22web.org/pen_testing_report_example.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/domonajuxewavuxupamitatex.pdfIn PDF document text
    • https://ginadilu.weebly.com/uploads/1/3/4/7/134768391/9c5eeb06.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/32725507737.pdfIn PDF document text
    • https://namowabe.weebly.com/uploads/1/3/4/0/134000139/903057.pdfIn PDF document text
    • https://minadefimufev.weebly.com/uploads/1/3/4/6/134635785/sibexomazedup_kuzibaneba_munadatinabi_nugikeru.pdfIn PDF document text
    • http://moneymaya.site/wunasuwozohym.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://robinovedibepo.epizy.com/30224167567.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/48791071744.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/sojonibulolabinosage.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/jafibebirofewe.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/budusiwutulirog.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_off0000d269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD269 5352 bytes
SHA-256: 35c463c165c8601346d3d4f4271db9fe22a972771c9673f7f522f1dabfdc7264
font_01_sfnt_off0000e499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE499 9944 bytes
SHA-256: 6b849f40d445cd09a12a8536fb10df33b85c6b7f034825f17f8eadf2e506af41