Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c775407501eae2…

MALICIOUS

PDF

68.0 KB Created: 2021-02-14 03:09:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d8d0cee47d511499841df5505a64d4ed SHA-1: 9cc6e455e360b398040c3d3e3e62e220f63f780c SHA-256: 48c775407501eae22affd6397630a4d3bb64100828e3d9a0c23fd3914cde5db8
196 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
  • 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://bologen.ru/wix?keyword=practice+evolution+vocabulary+worksheet+answers PDF link annotation
    • https://tikobivit.weebly.com/uploads/1/3/1/3/131382680/687516.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/dih7GD9/minecraft_skins_maker_nova.pdfIn PDF document text
    • https://jonurimexiv.weebly.com/uploads/1/3/4/3/134321783/jikido.pdfIn PDF document text
    • https://cdn.sqhk.co/siviraboriru/rbWhigh/80351564920.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/piiighj/boss_tu-_2_tuner_not_working.pdfIn PDF document text
    • https://ginixagizelak.weebly.com/uploads/1/3/5/3/135349131/f3e013665.pdfIn PDF document text
    • https://cdn.sqhk.co/furafurume/5Njfijy/74109789439.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/ajgylhd/97380521784.pdfIn PDF document text
    • https://nedamekiwuj.weebly.com/uploads/1/3/1/3/131379605/jeruru.pdfIn PDF document text
    • https://monowulesamewul.weebly.com/uploads/1/3/2/6/132682048/dezisi.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/9dVYhfO/fivise.pdfIn PDF document text
    • https://sepiximefajo.weebly.com/uploads/1/3/4/8/134849953/sizegazawivep-doralas-dokojozijuj-kalebuboroju.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/sajatesawodiji/sagifa.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/tecnologia_e_informatica_ensq_blogspot._com.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/obliterate_everything_3_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/remove_navigation_bar_in_xamarin_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/xafezemobadekaza.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/lomufamagosidenuvimanif.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_off0000ce90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE90 5344 bytes
SHA-256: 4df512e568dcef9d9f8843c088cb9d0f07334752a5a8494ee197a3b4efa6ae3e
font_01_sfnt_off0000e0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D0 9884 bytes
SHA-256: bbe9deb8d361faeb0ceb515ed4f1db21fe25518e37186751bd2cb54597af8577