Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 c29b6abf625521c3…

MALICIOUS

PDF / .VIR

339.1 KB Created: 2023-10-24 09:31:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-06-13
MD5: 71aa983e7a0240bec7bf653f1673c749 SHA-1: 38c177fadbfd476f853dc11c2e6e2ce7ac79e26b SHA-256: c29b6abf625521c382f82da2115937f378e466b8717ee1e879703ba1b09e7922
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7618

Heuristics 8

  • 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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://tanudame.fecuq.co.za/81775690089541750948162633?bixezokajakogapipufedod=jenabapixezojasusazuvojaladipitapumuviparewatituvanixiregolumikevedusifaparukijepuzerafukofusobufepavunilanuvebegewadunowukedaduvosasusiradiluxexefugufimawipapazugidafifilawananukozijuxewodemogovekijewijonizuge&keyword=bell+dish+installation+manual&jidibawilenurijapokagixulalegexexejedelorebukujemagufokemarufazewi=duduvodudofixurowesejafitabadovelipefakotakefanexanisazomorojurizositopexumufudelojekakebovadezozasiwimam In PDF document text
    • https://tanudame.fecuq.co.za/81775690089541750948162633?bixezokajakogapipufedod=jenabapixezojasusazuvojaladipitapumuviparewatituvanixiregolumikevedusifaparukijepuzerafukofusobufepavunilanuvebegewadunowukedaduvosasusiradiluxexefugufimawipapazugidafifilawananukozijuxewodemogovekijewijonizuge&keyword=bPDF link annotation
    • https://tanudame.fecuq.co.za/81775690089541750948162633?bixezokajakogapipufedod=jenabapixezojasusazuvojaladipitapumuviparewatituvanixiregolumikevedusifaparukijepuzerafukofusobufepavunilanuvebegewadunowukedaduvosasusiradiluxexefugufimawipapazugidafifilawananukozijuxewodemogovekijewijonizuge&keyword=bell+dish+installation+manual&jidibawilenurijapokagixulalegexexejedelorebukujemagufokemarufazewi=duduvodudofixurowesejafitabadovelipefakotakefanexanisazomorojurizositopexumufudelojekakebovadezozasiwimaPDF link annotation
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/354469507/NN/MJ/RV/201295611/balife.pdfIn PDF document text
    • https://irp-cdn.multiscreensite.com/4d7e612d/files/uploaded/3638324895.pdfIn PDF document text
    • https://jimdo-storage.global.ssl.fastly.net/file/e56ea0b2-0aeb-4d16-8a76-431d378c6f93/61159431489.pdfIn PDF document text
    • https://5.imimg.com/data5/SELLER/Doc/2023/10/354469505/QG/FK/KW/201295611/5ccd71d4-7272-44e3-91ee-eb346487bb53.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64edf4a344b357509dc01e47/65325f644d0afe70afc09918_33140735795.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64edf3d04cf457e21d59ec26/65325ea1c467891a3db8ce1a_rebupar.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64edf1a2ff4dc2e9df00b22c/65325f457fdd85bf65d73c78_tubaxanexawuvivim.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64eddc55897bcddbe2c9fd41/65325f987fdd85bf65d7c58c_gokuguzanimewep.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0004fc26.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004fc26.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004fc26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC26 16164 bytes
SHA-256: b78fb0c3782670cf1d3fc097ac8a4fac4c32ecf5240cd59f99768323fc35cf5f
font_01_sfnt_off000525d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x525D4 10564 bytes
SHA-256: ffb1c20853269ce42e5229bcb96b028d70f9280a0a7f29a1af9d26c4b26d01c5