Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 cc341b193be0e61b…

MALICIOUS

PDF / .VIR

600.4 KB Created: 2023-09-26 01:36:58 Authoring application: SWFTools First seen: 2024-09-20
MD5: da096e9bda0112d492bfa62b6fa7d6ac SHA-1: 4c9ccc7824b87eef2e21db2969ad3dac36f7faf2 SHA-256: cc341b193be0e61b351cfee19bd3c7c3b7dc66fba19637616a0c0f04a9f21416
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8619

Heuristics 8

  • 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 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.
  • PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
    PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
  • 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://cism-review-manual-2016-pdf-free.ramadainnsiliconvalley.com/kejerenun.pdf In PDF document text
    • https://saropobava.compuvend.com/lux.pdfIn PDF document text
    • https://xoniluvajo.synolo.co.za/46729407037091325051634443?wasoragemiluxopimiwepebelitekefelobofukotutudaju=koradezufarovosixikizogobibaperotinatuvejefodewofodutopoviwopapajipozazotofabunepazulelevegajurufimedadixidajofabolifesupirijavejevosobajimiroxorogudivuguxojimudodawufapujewilulewiziwapopabojigogamezenulumaxiki&keyword=an+american+family+book+summary&selibawemamevotategowalumidezifabibunumusedenukibuzozisuvirefujumeworitoxuluvidi=rinotafakalovemikebujeselewepuxewixewuberurevovasadurizudififujesonosenonoguporukufilolotisalaxovunofIn PDF document text
    • https://xoniluvajo.synolo.co.za/46729407037091325051634443?wasoragemiluxopimiwepebelitekefelobofukotutudaju=koradezufarovosixikizogobibaperotinatuvejefodewofodutopoviwopapajipozazotofabunepazulelevegajurufimedadixidajofabolifesupirijavejevosobajimiroxorogudivuguxojimudodawufapujewilulewiziwapopabojiPDF link annotation
    • https://xoniluvajo.synolo.co.za/46729407037091325051634443?wasoragemiluxopimiwepebelitekefelobofukotutudaju=koradezufarovosixikizogobibaperotinatuvejefodewofodutopoviwopapajipozazotofabunepazulelevegajurufimedadixidajofabolifesupirijavejevosobajimiroxorogudivuguxojimudodawufapujewilulewiziwapopabojigogamezenulumaxiki&keyword=an+american+family+book+summary&selibawemamevotategowalumidezifabibunumusedenukibuzozisuvirefujumeworitoxuluvidi=rinotafakalovemikebujeselewepuxewixewuberurevovasadurizudifiPDF link annotation
    • https://img1.wsimg.com/blobby/go/5a2fd4f9-f4de-4c61-b80f-a71d4152a4f2/downloads/xiwukiveru.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/5413a9f6-5512-4b47-b254-f9f6eec5b175/downloads/guinness_world_records_2020_list.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/5413a9f6-5512-4b47-b254-f9f6eec5b175/downloads/86717545778.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/cac64821-2205-4248-abd9-55e775312c94/downloads/bazetit.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/04bee425-9af1-46e7-aa13-8c0965ed46d2/downloads/rijekeri.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/04bee425-9af1-46e7-aa13-8c0965ed46d2/downloads/58944987209.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/5413a9f6-5512-4b47-b254-f9f6eec5b175/downloads/5451236865.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/04bee425-9af1-46e7-aa13-8c0965ed46d2/downloads/pamovukowawitubo.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/cac64821-2205-4248-abd9-55e775312c94/downloads/79667590693.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/cac64821-2205-4248-abd9-55e775312c94/downloads/gibraltar_plastic_mailbox_mounting_board_instructions.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/5a2fd4f9-f4de-4c61-b80f-a71d4152a4f2/downloads/wivinipadojopotet.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_off00090cf5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00090cf5.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00090cf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CF5 10828 bytes
SHA-256: 1bd3e5f14d36ff3706e46566bcee806f643c9612b0d71bd8aff147ae2295b9c3
font_01_sfnt_off000925ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x925EC 16724 bytes
SHA-256: ea385c5a8f19afb76a5ccae7a3eba623d1fda0e7fe223edf5af6806813498896