Malicious PDF — malware analysis report

Static analysis result for SHA-256 029dd41db4e11b64…

MALICIOUS

PDF

71.1 KB Created: 2021-02-25 10:09:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: c088acd2c831f9d45dcd19de68df4195 SHA-1: a2d01bb73815a7e108628c62e9c5862e9e3c5a73 SHA-256: 029dd41db4e11b640639a662d240fa0cc380275329cee710410677f28726e012
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/award?keyword=is+betty+crocker+chocolate+icing+gluten+free In PDF document text
    • http://pigigozoruda.mypressonline.com/motorcycle_diaries_full_movie_online_english.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/74823304822.pdfIn PDF document text
    • https://mapunexi.weebly.com/uploads/1/3/3/9/133999872/kijid-gegomugiri.pdfIn PDF document text
    • https://cdn.sqhk.co/vovawumusa/jfFhe4Y/26089291853.pdfIn PDF document text
    • https://cdn.sqhk.co/nemazuwigumo/fhajaig/32534082463.pdfIn PDF document text
    • https://cdn.sqhk.co/zikonidenijo/Yufphbb/how_to_bake_thin_pork_chops_tender.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/pentax_k30_vs_k500.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/21182363968.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/82819098926.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/84954731298.pdfIn PDF document text
    • https://pevunefimexog.weebly.com/uploads/1/3/1/0/131070247/4178894.pdfIn PDF document text
    • https://cdn.sqhk.co/pumafuki/hbTkhbO/42889796606.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/mupukesunobaga/wugapakejofesazom.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/wuwirebupubolun.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/99904589615.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/understanding_comics_espaol.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/rapibovowoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/kinidarunadi.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/2846444466.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/palmistry_tamil_free.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_off0000d6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D4 5384 bytes
SHA-256: c699cb19105244547ed24ee9624bdd307c17609d3bc16edf28545443b5d3693d
font_01_sfnt_off0000e931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE931 11288 bytes
SHA-256: 47371e97c60306dbb27b3b80bc3e2b0b5ee95a54712877e3150b355dd11068fe

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