Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ffaa5ca1e2b4fa…

MALICIOUS

PDF

70.4 KB Created: 2020-11-11 16:19:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: cce174ed014cc18c09f3048f70595472 SHA-1: b47dc4aeb9ec1a2e4ffc2cb49f15cdcf36d60594 SHA-256: 25ffaa5ca1e2b4faf4efdb44a179bc5797e3f2ccccd224578ee625ca4382fcdb
254 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
  • 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://traffine.ru/aws?utm_term=shell+rotella+t5+15w40+specs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373749/normal_5f9ab4b66f1c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389101/normal_5f941294b86eb.pdfIn PDF document text
    • https://vefotufujipewux.weebly.com/uploads/1/3/4/4/134401009/1945ffeb77b395b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411493/normal_5fa8a21267c57.pdfIn PDF document text
    • https://rukinedofixod.weebly.com/uploads/1/3/4/3/134348838/kataxegijaxagexuju.pdfIn PDF document text
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/bemezage_gulovipu_xedixozufotexo_witobenowibodoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379848/normal_5f8b72d71e9d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5f8aa4724a374.pdfIn PDF document text
    • https://maxojemuv.weebly.com/uploads/1/3/4/2/134266220/dasepojim.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ed8f46ff-dc8e-4253-9157-e669c8c13bdb/40069517535.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/mumisawemalunifijuno.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/adding_and_subtracting_decimals_worksheets_common_core.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/43290203462.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/alkenes_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/379727011.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC759 5256 bytes
SHA-256: cac5492df918956ef76149a2c09e641060d648cdd9fd5debb5d5c25b688b1cea
font_01_sfnt_off0000d95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95E 10916 bytes
SHA-256: 5817786f19138b9073a4b1fe73224bcc31f56e51d24074e18cf937c02922d418
font_02_sfnt_off0000fe9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.