Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86f5dd29e31efb5…

MALICIOUS

PDF

84.8 KB Created: 2021-09-04 00:59:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d67c2e719f1b8ef21ba0435dc213931e SHA-1: 7929981b08862cee7a56ddf807f0ec96470e32a1 SHA-256: a86f5dd29e31efb5fcf139b1ac04b357c92fe90b2968763d6958ccc0ee994cd9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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 http://goldenagegroup.vip/userfiles/file/vavaturibadewire.pdf In PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160c2355fee493---taketimenakebebolepitem.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/59c7923e792a159cdbba9fb42cb0409e/48527603053.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/a85f086851240b43e13c06b6deaf2fa7/61530255604.pdfIn PDF document text
    • https://naoshima-habitant.com/lakuluwowodafofap.pdfIn PDF document text
    • http://aquamedia.cn/ckfinder/userfiles/files/33088121248.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/pabifefadagemel.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/rju90616uaptqig057sgipn6r5/61777763984.pdfIn PDF document text
    • https://jordanadams.com/ckfinder/userfiles/files/61543196701.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/2h7mhgvsjqvrhvcs67t6ukv8r4/83045269581.pdfIn PDF document text
    • https://open-call.fr/uploaded/files/672546978.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/63b1170291aed2ab0be8e65ce9f76c1c/17532650104.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/cc37ca4f286c305ea0325bb708db2ce8/pimonudojunetedizoz.pdfIn PDF document text
    • http://e-menu.hu/editor_up/14015775604.pdfIn PDF document text
    • https://jagamimpi.com/contents//files/99414154171.pdfIn PDF document text
    • http://meyanko.com/userfiles/file///73815894596.pdfIn PDF document text
    • http://bettynblue.com/upload/fck_img/20210904/file/wumekumewaxalesolipewuru.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160f34433a71ee---zozovu.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/87115694181.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606e16d08a003---60802661587.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c4165035415---dewesasukobuwefekagaba.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089d91f7ced6---45349977090.pdfIn PDF document text
    • https://fonixkoncert.hu/upload/file/38144955186.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/vngud99sijppkf6j4e1fc2ju8n/xitevopibuxojevon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=manual+de+usuario+epson+xp-255PDF link annotation
    • 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42E 17936 bytes
SHA-256: 702c2fdb0be265ab56856fab3a394e1a2db925062a0318d9e4775c86afce58b4
font_01_sfnt_off00011356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11356 10772 bytes
SHA-256: e1c10543a7a5ae1e512310f460102d1febc85337014d9e97a982828b406e2dad
font_02_sfnt_off00012c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C51 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1