Malicious PDF — malware analysis report

Static analysis result for SHA-256 634b48bc1896018e…

MALICIOUS

PDF

76.6 KB Created: 2022-04-07 19:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: 6f16121c9495d0adcd18a3d3ffac1bdc SHA-1: 04a390b2fc18819f0b798dd69cdba1d9de3f2039 SHA-256: 634b48bc1896018ec0d15c60b7aed84bb669803ab8cff41e7edbb4afbcf95b8e
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lazav.co.za/YmrXLWy8?keyword=tipos%20de%20bombas%20industriales PDF link annotation
    • http://sky1981.com/asset/uploads/files/lufabepivipakekeb.pdfIn PDF document text
    • http://www.mab-solutions.fr/upload/file/9646787273.pdfIn PDF document text
    • http://fzsvybbs.at/userfiles/file/33330114139.pdfIn PDF document text
    • http://kinel-hunter.ru/upfiles/file/tutejemaziziburibinadavum.pdfIn PDF document text
    • http://akifkasaboglu.com/esatfisek/images_upload/files/2938919967.pdfIn PDF document text
    • https://vatuvuvowuti.weebly.com/uploads/1/4/1/3/141331892/lisijer-vovoduk.pdfIn PDF document text
    • http://elitk.ru/_files/92452357757.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/f6bf7cedbc7ac381f64334ca523f605b/48805832666.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1624aa61f3e864---rofuvejevelamibakuguji.pdfIn PDF document text
    • https://www.mvfht.ca/kcfinder/upload/files/37273325097.pdfIn PDF document text
    • http://reputesystems.com/app/webroot/uploads/files/11519953042.pdfIn PDF document text
    • http://aleksey-mihalchik.ru/upload/files/wogofajidojuve.pdfIn PDF document text
    • http://noahsmarinesurveyors.ca/userfiles/file/92352953772.pdfIn PDF document text
    • https://natyabio.com/uploadfiles/29044500270.pdfIn PDF document text
    • http://xn--d1achljw0b.xn--p1ai/content/upload/rebijomipibalojof.pdfIn PDF document text
    • https://drosamahetta.com/userfiles/file/begiwat.pdfIn PDF document text
    • http://gocash2u.xyz/userfiles/file/45473161324.pdfIn PDF document text
    • https://zilisekisami.weebly.com/uploads/1/3/1/4/131437354/porov-puzokuzezuf-soxumajugatef.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16227b5459b697---46525089811.pdfIn PDF document text
    • http://pradakshinam.com/fck_uploads/file/jizomeruzasogikowolegel.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_off0000c5be.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c5be.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5BE 17536 bytes
SHA-256: acd475b41b63c91e6c28c9a0c0d687ea1fa57201290e0960b7370305eb553401
font_01_sfnt_off0000f266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF266 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7D 10756 bytes
SHA-256: ce433738156266d25d990b45247807cecc672d402977b12e0acd64de96720da7