Malicious PDF — malware analysis report

Static analysis result for SHA-256 4696c1b31753cf27…

MALICIOUS

PDF

71.9 KB Created: 2021-02-19 00:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 72458dbe0e766f414050133571bef2e1 SHA-1: f1e720414d7255f14702b0d66871c0eb239709e9 SHA-256: 4696c1b31753cf27faa49a18c7f84c6cdf35ca199635071d4a8dc9fabb3e81ca
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=midi%20din%20to%20usb%20cable PDF link annotation
    • https://cdn.sqhk.co/gogojelawov/qjbhdjj/nezuxixevudiveziwe.pdfIn PDF document text
    • https://cdn.sqhk.co/tokititagiwe/L5jc5gf/green_bean_casserole_from_scratch_no_mushrooms.pdfIn PDF document text
    • https://cdn.sqhk.co/lumolixuwo/mxXjaig/vifibewapedekolif.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/0P0Mzie/overcoming_obstacles_relationship_quotes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487622/normal_5fe2330a9c1f4.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/jfgEZiy/16566054417.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/jioFhhj/84009198919.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/zegelubulajixegurumubuxu800ta.pdfIn PDF document text
    • https://cdn.sqhk.co/karadirimose/jmmJZic/dinosaur_simulator_black_friday_2020.pdfIn PDF document text
    • https://rixafewokeget.weebly.com/uploads/1/3/0/7/130739987/tinevaxugugapiz_purowinobuzan_dijevaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417995/normal_5ff7f2db2d00d.pdfIn PDF document text
    • https://bijazebis.weebly.com/uploads/1/3/1/3/131382141/kugeralegigekas.pdfIn PDF document text
    • https://pukogapuwobar.weebly.com/uploads/1/3/4/3/134307851/4960649.pdfIn PDF document text
    • https://cdn.sqhk.co/zatuwifezub/bVghhe1/gedalopiraxizubada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479942/normal_6008d1393967b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dcf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF2 4984 bytes
SHA-256: 4d22863e02abf6a9d6d5d237a779438aac1cee10ed541f9efbbdb511954294d5
font_01_sfnt_off0000ee00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE00 10924 bytes
SHA-256: 03185b184384cc25c275474d3c69c914701d74a89af8357d1b9cf38e826f1baf