Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc17f68776075f37…

MALICIOUS

PDF

67.9 KB Created: 2021-01-30 06:05:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a646602ddb10412a32a7371777af3005 SHA-1: 69f1512ea06e22a5750e0ca5a3130b7e3b013ee2 SHA-256: dc17f68776075f378a38761706a7b3242afbb00cfc14f5461e3644af90e0acab
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/aws?utm_term=checkpoint+endpoint+security+mac PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417040/normal_5ff0cd130e289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527237/normal_6012c30b0bd9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420765/normal_6002445f51994.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485813/normal_5fe1cb63e08af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413712/normal_6003ebdcdda9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427781/normal_5fcd437f6118f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kubemumibesedu.epizy.com/10163078315.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/alan_wake_game_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/20779542308.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/70816306839.pdfIn PDF document text
    • http://fufibilola.epizy.com/kufelewizikejipem.pdfIn PDF document text
    • http://kagokonutuvep.epizy.com/23346643095.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/38393039491.pdfIn PDF document text
    • http://fibubaxuvuvixik.epizy.com/bakojaw.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/chirunavvutho_movie_video_songs.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_off0000cdd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD8 5352 bytes
SHA-256: 65e2c7602d551396d1e41e159650632e2473067ab3b9eb1f8de5b78ccb7d13ca
font_01_sfnt_off0000dfe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE1 10184 bytes
SHA-256: 8f708f7cfee48206710394a3945e15cf158539798b4e5ad1b19fc0d80c237a5d