Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb6ccdeb5ab9f45…

MALICIOUS

PDF

45.2 KB Created: 2020-10-26 19:13:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 2f220106385f64225729d3367900e9f8 SHA-1: 1ff230254c4b16761c86302d15b4edf6e90d44ac SHA-256: 2fb6ccdeb5ab9f45623024deb0587f9422682c92e779eeee63311071a2703308
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/pify?keyword=everything+you+need+to+ace+science In PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/pozezeliwudu.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/tadodinad-nakiwovukil-tumuset-lomifatolumim.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/safonubupipu.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/26e6733953.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/kekikefuwu.pdfIn PDF document text
    • https://penopetidurip.weebly.com/uploads/1/3/2/8/132815040/4fd5055892d8.pdfIn PDF document text
    • https://sopopubepomexak.weebly.com/uploads/1/3/4/2/134265445/gubibuz-niganikofi.pdfIn PDF document text
    • https://numomepezudoti.weebly.com/uploads/1/3/4/3/134320197/4234abb16a32.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000070a0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000070a0.bin)
    • https://cdn.shopify.com/s/files/1/0432/0981/8280/files/57043638373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/refefeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9425/9912/files/lovedrobe_dress_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9929/4363/files/39799165955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6617/4871/files/4882991858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2661/1357/files/11373610663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1412/6272/files/zip_to_apk_file_converter_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/slow_motion_camera_extreme_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f013ee0b-8943-48d7-b59d-bc694e198433/pakumevelokanetuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cf0f927-bc61-415f-a570-608ebb28509c/mitedug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66ae4284-6232-46e8-8804-ce17a6799f73/271074013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc757a23-1f9f-4a4e-a0d8-e121f8118753/86186026640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/771d3e44-26b4-433b-97ca-7487d2f5eb60/500_days_of_summer_full_movie_hindi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2548/3944/files/xepuxalukizubixuworep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2719/1715/files/clinical_gynaecology_5th_edition.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_off000070a0.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A0 5288 bytes
SHA-256: f7866cd178bf25bd9bd2993ae9014374ccaed43314f35ab433a37d34ff3634db
font_01_sfnt_off0000829d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x829D 10848 bytes
SHA-256: d5883fbf77349854839f1ae73838c5fee280d99fbb31e423b6f36ad2011337b9