Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3938717aa4842f…

MALICIOUS

PDF

63.6 KB Created: 2021-02-16 13:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: aae9d53f8116f265450a2343bf7cd8c2 SHA-1: 65622c153abf19102707e049348dfd24b39ea04a SHA-256: ec3938717aa4842ff8866210fb5ee0289285c985e9f4da0d7fc18010ef00abc5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/wix?keyword=ticketmaster+earth+wind+and+fire PDF link annotation
    • https://puwaxitakobesod.weebly.com/uploads/1/3/4/1/134109073/9492480.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387052/normal_5fc644c80f049.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406216/normal_5ffff40a4489b.pdfIn PDF document text
    • http://xuvaguwanolinu.66ghz.com/shining_force_2_mithril_guide.pdfIn PDF document text
    • http://xujosigij.iblogger.org/21327734304.pdfIn PDF document text
    • http://poxinezov.iblogger.org/35288542903.pdfIn PDF document text
    • http://pivowave.iblogger.org/70283253145.pdfIn PDF document text
    • http://pejofewetoz.22web.org/42527993399.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bonubenevutura.epizy.com/pathogenic_microbiology_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/toliganobi.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/coffee_bag_label_template.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/cartoon_hd_apk_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/19326120232.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_off0000bd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD61 5336 bytes
SHA-256: dc2f7c1ca687979df74108b001ca79d2b721e8a8269ebecb780d07691ee42846
font_01_sfnt_off0000cf6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6C 9984 bytes
SHA-256: cc55eaa75bccecb9e32f4b3bbe7cb742b691d050c725323e97cb2cf672938621