Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 8df9e00d5ade9b15…

MALICIOUS

PDF / .VIR

485.4 KB Created: 2023-08-25 18:51:22 Authoring application: Solid Converter PDF First seen: 2024-10-15
MD5: 316130fbd65ccfa24baa1878fdb42954 SHA-1: 7066aa212ba8038b20a72ab7980fc3d2e5f924b4 SHA-256: 8df9e00d5ade9b15fee223d29c14a27a0e7c93c8be14cc3ee4481e524be6bd90
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8119

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://zaxawusegamexu.yenene.co.za/813009122428081611?guwobekebofevijefalexiloresumurunimafewitefawowixowatigejufonanuzokabutodedeg=xitapujanilepixuroratosugamakitiluvakibigiravudetuxurefonumizalukamadeborewodifolofizasilawigonodoxasimijasorurupexadasituwuwiwituregofaxojimererufelibepazolukufimirugakodolizegobimuxujanupovimodetasutinazigu&keyword=materi+pendidikan+agama+islam+kelas+12+pdf&bewemibakegifumalanivorurugikomekulaganerejuzekopoxuviwigiga=jadusebufibadivatigometufinipudotonaxapojajovuwadaxumemuwopadodelogomuvobupeniradaxusilanosogigimafetirexemuzowefetuvo In PDF document text
    • https://zaxawusegamexu.yenene.co.za/813009122428081611?guwobekebofevijefalexiloresumurunimafewitefawowixowatigejufonanuzokabutodedeg=xitapujanilepixuroratosugamakitiluvakibigiravudetuxurefonumizalukamadeborewodifolofizasilawigonodoxasimijasorurupexadasituwuwiwituregofaxojimererufelibepazolukufimirugPDF link annotation
    • https://zaxawusegamexu.yenene.co.za/813009122428081611?guwobekebofevijefalexiloresumurunimafewitefawowixowatigejufonanuzokabutodedeg=xitapujanilepixuroratosugamakitiluvakibigiravudetuxurefonumizalukamadeborewodifolofizasilawigonodoxasimijasorurupexadasituwuwiwituregofaxojimererufelibepazolukufimirugakodolizegobimuxujanupovimodetasutinazigu&keyword=materi+pendidikan+agama+islam+kelas+12+pdf&bewemibakegifumalanivorurugikomekulaganerejuzekopoxuviwigiga=jadusebufibadivatigometufinipudotonaxapojajovuPDF link annotation
    • https://uploads-ssl.webflow.com/64f19b888421df3c8fc1ca32/653d5ed3a20cd20e8f44b769_tavazulokufefeva.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/54eefe89-e1f6-4e1e-9920-4e640054661e/downloads/fafowuwaluropevototelan.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/50bc22ad-d958-4927-a6ff-411f8797d819/downloads/29517118781.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/f6d03419-1a06-4acd-b318-c8ed8d66f056/downloads/98353671824.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64edb91a66033dffc82956df/653d643ec0189b84bfe2945b_53042519065.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/50bc22ad-d958-4927-a6ff-411f8797d819/downloads/wasitowi.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/e7d37114-0dcb-4480-8e92-1e4c8eadd6b4/downloads/newtons_law_of_motion_daily_life_examples.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64f8448a7326423b2362cf77/653d622f4d9800b8d4818594_fijiwuzukiz.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/50bc22ad-d958-4927-a6ff-411f8797d819/downloads/bopexiguxoxeromarif.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/0cffdd52-6c97-4938-b89e-abddc867de8d/downloads/how_to_calculate_irr_using_financial_calculator_casio.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/ac14a1a1-5af8-4658-915c-bc69f6cc8d9c/downloads/how_to_identify_autism_in_1_year_old.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_off00073967.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00073967.bin)
    • http://gnu.org/licenses/gpl.htmlIn extracted file (font_01_sfnt_off00075290.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00073967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73967 10968 bytes
SHA-256: cf0b040fd93a71d3e8c295a578dd74a31de03ab59d01fe2294ad73814a704fc2
font_01_sfnt_off00075290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75290 2076 bytes
SHA-256: c5e62124646510f5178029c3358f3aecb2cc5b0e7f6c58087c3cb047b8690067
font_02_sfnt_off00075bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BAD 16784 bytes
SHA-256: 9a57e6183cc701c5b2179cf9fa9a1223a2a73ab6de933206877286e92abb6a33