Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08ceea5d3c5ce6b…

MALICIOUS

PDF

69.0 KB Created: 2021-02-03 03:37:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9014db5b04efcb666523d998ce14f854 SHA-1: 68bd2b40e3949a1a95c7f8b04fd60ad3aad62dd0 SHA-256: f08ceea5d3c5ce6b1f21b6698072fad811385c741046eb8a0880671cbebeaee3
294 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=android-%20tools-%20adb%20ubuntu%20error In PDF document text
    • http://milanomoda.site/tifexanebufinirejoez07i.pdfIn PDF document text
    • http://generatorsale.ru/pro_series_drag_racing_app_cheatsw7usw.pdfIn PDF document text
    • http://italywow.pro/action_verb_and_linking_verbs_worksheetd9dkp.pdfIn PDF document text
    • https://zupelewelasilag.weebly.com/uploads/1/3/4/5/134594614/renese.pdfIn PDF document text
    • http://sarkife.site/sample_introduction_of_guest_speaker_templateeea0r.pdfIn PDF document text
    • https://motodamoz.weebly.com/uploads/1/3/1/4/131452818/748775.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://davafegi.epizy.com/suvow.pdfIn PDF document text
    • http://nopizapokife.epizy.com/and_1_street_basketball_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/android_alarm_broadcastreceiver_example.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/10x10_coordinate_plane.pdfIn PDF document text
    • http://kupaxomuwekag.epizy.com/67748122100.pdfIn PDF document text
    • http://zebigibozudival.epizy.com/before_anna_todd_book.pdfIn PDF document text
    • http://vifotuniso.rf.gd/fafufilixudenafuragalovox.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/mesujixixanigoxaxesinar.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/12102249990.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_off0000cdad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDAD 4980 bytes
SHA-256: cd675f5d46e8acdac2cf4a657b5bd7ac51f12a8f543e02cb997e280b91e44f63
font_01_sfnt_off0000dea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA9 11396 bytes
SHA-256: b6fc74a13fa9cd8faf50d5bf91aa5f13ee32692df4d856b3f1cb3c4906c39a23