Malicious PDF — malware analysis report

Static analysis result for SHA-256 92627c67d9d8cdf1…

MALICIOUS

PDF

70.5 KB Created: 2021-02-02 19:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3ddb073a3e6edab75470f1f9cac80a88 SHA-1: d6b65801eaf65c703066e298dd83f5b5be2b0637 SHA-256: 92627c67d9d8cdf16da84bda20849eb90659daa1eb4e7a556892baa2716e6e05
196 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
  • 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://maypoin.ru/aws?utm_term=descargar+apk+android+gta+san+andreas PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447108/normal_6004beb59bad2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494668/normal_6015b1b345e98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416929/normal_6002895c58054.pdfIn PDF document text
    • https://pimuvetu.weebly.com/uploads/1/3/4/6/134635596/b693a6.pdfIn PDF document text
    • https://sirabirimafo.weebly.com/uploads/1/3/0/7/130739431/b8480aeed15f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446394/normal_5fc575324b598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380527/normal_5fda522d705d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384154/normal_5fe0e3367ccda.pdfIn PDF document text
    • https://watagejikifawup.weebly.com/uploads/1/3/4/5/134589749/eee114430890c89.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/ghieRjh/73688139306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476275/normal_601742bd4e870.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453741/normal_5fff10e3495da.pdfIn PDF document text
    • https://petabururumeje.weebly.com/uploads/1/3/4/9/134902787/8081415.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vaforapibasaw.epizy.com/dugavorosef.pdfIn PDF document text
    • http://fejusadifidexi.epizy.com/vovovotovogixev.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_off0000d60c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60C 5272 bytes
SHA-256: 0d2df5b43cfe9f1cc20adfc0e0e0735cb00ead7a0bcaf8a13b7668ce944ded11
font_01_sfnt_off0000e815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE815 11224 bytes
SHA-256: 739893241f50a000f04d120f7d0ddd133a1714afffeeaeb6d1d0d8d799ec31db