Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1189b023bbc458…

MALICIOUS

PDF

73.4 KB Created: 2021-02-10 13:12:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d5186c1d5b6a966a24015d13e47a20c3 SHA-1: 956c344e28f71410360a3ccd629a8a4b94cad4dd SHA-256: 6e1189b023bbc458530b6812cef9c3c7051a87b498697a9e345afd6c31ca6473
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/wb?keyword=availability%20check%20in%20sap%20sd%20pdf In PDF document text
    • https://gitikaru.weebly.com/uploads/1/3/4/9/134901111/liwalewe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460723/normal_5ff2acf8cbc40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408184/normal_6016d96088f6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468814/normal_5fe05fad01e40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366048/normal_6003a11b26e4b.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/jdLidMj/61711352889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378151/normal_60145835be8bf.pdfIn PDF document text
    • https://sekikeke.weebly.com/uploads/1/3/4/7/134739811/5338d96ed1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489598/normal_600138dc14a8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403816/normal_600fd9968b20d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403679/normal_5fe9430167f87.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/rodiligarexo/zifenixemixibigesavupojol.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/jelos.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/answer_to_complaint_california_state_court.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/us_army_survival_battleground_mod_apk.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_off0000e2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FA 5504 bytes
SHA-256: 4ec0dcd275278cf2af711ccaef01dcc41965523bb108a6289a319f4b3731c7f4
font_01_sfnt_off0000f5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BE 10244 bytes
SHA-256: ccb73c3e6ed43438e3fc156d4415d9bb4d073cb2448818da4f7e020df9f0576b