Malicious PDF — malware analysis report

Static analysis result for SHA-256 e562011490e503a5…

MALICIOUS

PDF

89.5 KB Created: 2021-06-28 21:34:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5dbde9a9ef66a110d2a18a2cb5cc35b4 SHA-1: 29bdeff5774a40251278121c3dc87f2d1efead63 SHA-256: e562011490e503a5a4644c610929193433970855851f591eeaa9f7080c4b8574
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm that directs users to multiple URLs, many of which are hosted on compromised WordPress sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9558

Heuristics 6

  • 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 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://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/eeb3cd14575d2fc22ae3a45468f09519/kajaloxufezakak.pdf
    • http://scamps.biz/userfiles/file/38892708400.pdf
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/94c89f9c0785e13338894b0110213e10/39360575289.pdf
    • http://arcenevents.nl/site/upload/files/83750034303.pdf
    • http://taiwanglassgroup.cn/userfiles/file/44131042545.pdf
    • http://z500.si/files/11112489077.pdf
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/0aur0pc10pbdcncvosojunqkg2/52715292722.pdf
    • http://bhsclassof70.com/clients/a/ac/acf0241a72c9eb28a719a759cf8a4748/File/visorevaberomima.pdf
    • http://fw-simple.com/uploads/files/fojizoritale.pdf
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd48a13ea9---78968240138.pdf
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608a48108bf1b---najokevazosefeteke.pdf
    • http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/ukq72tsd76k85htir3b9qqfhv1/mixevugadefawuwon.pdf
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a8336c69241---42935540408.pdf
    • http://www.cddfct.com/up_files/file/fakekerafatebijikenudog.pdf
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ce5d5aa191a---kunupetuxuvepo.pdf
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608d41be69016---13562755049.pdf
    • http://luckdidea.com/ckfinder/images_store/files/kewunuluvimexun.pdf
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4c4e14777---febifunaje.pdf
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e90ff160f2---konejabujovuz.pdf
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160775636dc7fb---87928024192.pdf
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609edd622ef42---tigimowolono.pdf
    • http://debeleven.net/UserFiles/File/47971073693.pdf
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160965683c2f52---tasukozutubujafuribe.pdf
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c54a15e23c---jopabapolazusok.pdf
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ada0a96369e---10430774122.pdf
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8fd81c49c---29781241044.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=all+i+want+is+you+miguel
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4c2.bin
09b36c848f51dc5b43cc799e779ff82f3e1295f348970c0a3b07ba7926e55ff8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4C2 16476 bytes
font_01_sfnt_off0000efca.bin
c01e7f081d2984dd6cd76cedd93ea4920f7b5839b12ab5dbad363aaf90531f38		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCA 9396 bytes
font_02_sfnt_off00010f1c.bin
d06246de5fbca08a8e71b3266423534d5cc020e17a1f81eafc946de7058d617f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F1C 16088 bytes
font_03_sfnt_off00012453.bin
b5e99d99f117cd8916f4444c7210f51d761e552bd4516cea9b8a4b9c5b08229c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12453 10632 bytes
font_04_sfnt_off00013cca.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CCA 16792 bytes

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