Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ddab69a536f0d2…

MALICIOUS

PDF

65.7 KB Created: 2021-02-23 15:06:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d95525de1377860a34359df47b70cb0c SHA-1: e4191405a251be781f68dd4d5b6d20619f034a58 SHA-256: d7ddab69a536f0d23216fabb81bb98318177de170945b97daf3d5659248c07dc
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://jottigo.ru/wix?keyword=vocabulary+workshop+level+a+unit+8+answers+synonyms PDF link annotation
    • https://tovibebifenoge.weebly.com/uploads/1/3/2/6/132695438/21a8313e015a1e2.pdfIn PDF document text
    • https://barigager.weebly.com/uploads/1/3/1/3/131398159/pikuwud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476593/normal_5fff68d322cb7.pdfIn PDF document text
    • https://webimilosajepi.weebly.com/uploads/1/3/4/8/134859137/9456a362.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383917/normal_602471f57b9b7.pdfIn PDF document text
    • http://igcopyrightclient.com/todebofijanedekaroxizgxdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414336/normal_5fd7c0c90d277.pdfIn PDF document text
    • https://wawumojobov.weebly.com/uploads/1/3/5/3/135323155/dokisulot.pdfIn PDF document text
    • https://puxodemidumez.weebly.com/uploads/1/3/5/3/135345879/9313005.pdfIn PDF document text
    • http://remontlegko.info/99694059785y0zab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502464/normal_5feff62597a6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372955/normal_5fe841cab82f0.pdfIn PDF document text
    • http://regsenatvumen.website/xulifasirapes0ckl8.pdfIn PDF document text
    • http://helpcopyright-service.com/legendary_gunner_class_mod_borderlands_3y1aom.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/gavexilatuvitaz/83203722628.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/loruviwudofibanuso.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/julosigiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/editorial_guidelines_en_franais.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/81068112921.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/balu_mama_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/huawei_y3ii_frp_bypass_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/app_to_make_3d_models_from_pictures.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_off0000c45e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC45E 5792 bytes
SHA-256: 0f1cc51a1a7fe1760f84ccc3b74821f7f15980f05775941a733d48a5b34a38c4
font_01_sfnt_off0000d806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD806 9756 bytes
SHA-256: af0ee22b21f0811fb27d63d383669008d725c883a629c00de60f452ddcf0211e

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