Malicious PDF — malware analysis report

Static analysis result for SHA-256 05cfa92182a902aa…

MALICIOUS

PDF

46.0 KB Created: 2020-10-04 09:04:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ba0cd52653efb77cd8f23c37125269a0 SHA-1: 905889868a59e61174ec5c58c6e5bbdb3e4c3dbd SHA-256: 05cfa92182a902aae696cc22256c364e62ea364ffead9dd9a7175ee686651d8b
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://cctraff.ru/strik?keyword=haynes+repair+manual+2004+toyota+camry In PDF document text
    • https://site-1037009.mozfiles.com/files/1037009/mevekokewufod.pdfIn PDF document text
    • https://site-1037132.mozfiles.com/files/1037132/jelotetim.pdfIn PDF document text
    • https://site-1039517.mozfiles.com/files/1039517/tixabawukoruroropor.pdfIn PDF document text
    • https://site-1036902.mozfiles.com/files/1036902/98958709468.pdfIn PDF document text
    • http://files.triangleyouthballet.org/uploads/1/3/1/8/131856877/napigajulig.pdfIn PDF document text
    • http://files.alloexo.studio/uploads/1/3/1/4/131437780/8365b0410ea56d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ce7b5ac-d36a-4dc1-8b1e-2b98fadd944b/lovunatapuzufowopive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8580fac7-cd5d-4798-8eb2-d3b0f00d86a4/44006615943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6935768a-9b5a-47dd-a145-8d83cb412f8c/xiwavanejobofom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbc133a2-b1be-43ca-98c8-594e4a829031/jipazoxukemab.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_off0000747e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747E 5504 bytes
SHA-256: b226a42ef442269683b3ce3da365ce7719a0092ac44ae299cfb20a7b1bb5819e
font_01_sfnt_off00008730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8730 10560 bytes
SHA-256: 0b342bae8ae462ffd1799b00e72473ad6f30ac8dbf76b49967b37734f023ac65