Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7de33883a26649…

MALICIOUS

PDF

89.6 KB Created: 2021-06-28 10:34:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 53c46f2f912461e716617ea36a2c4760 SHA-1: f3f9ba43ae4c5d871dbec7a312405659b2a4056c SHA-256: eb7de33883a266494918f606fc30b87b092b4706d9cb5deaf70a0743368da131
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution scheme. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://carriewoodfamily.com/clients/5/5b/5b9f2fb360c4065436fb7fe1267c3612/File/dalaxatelizumemomeba.pdf
    • http://strandedtattoo.net/file/34301133862.pdf
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/48f3b6458e160f2acfe8a3751ca448c4/vamuxerefemotifafozebesad.pdf
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/21d8a4682695cdb7d79cf85ef78ffbd5/zemimogelizezerifowalef.pdf
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607acbb07b1e3---37494248803.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb633c8368---52084280208.pdf
    • http://statsale.com/data/upload/ck/files/84996296527.pdf
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b165e94b47---13838938244.pdf
    • http://sns.hu/_user/file/93862159221.pdf
    • http://divapharma.com/uploaded/file/50167755885.pdf
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/8003642f3b61924f54be78b24109f06f/nujakuna.pdf
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce5f0c61474---33821852539.pdf
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/f5cd1a00ad1ffc899f26cf5a23c6d0e6/4462471807.pdf
    • http://gw73patriots.com/clients/1/1e/1ed986c9d410becccfd9995a8318e329/File/10624789179.pdf
    • http://birkhoffhi.com/userfiles/files/xoxarapatinedalunoseduge.pdf
    • http://nemdanangpho.com/uploads/2021-05-29/images/files/diwutefarugagenuvita.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b426c09c344---44681439776.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608383a564f46---42912508912.pdf
    • https://gamaconsultores.cl/upload/file/pabatafaxe.pdf
    • http://happyhanool.com/ckupload/files/56647697932.pdf
    • https://webmenuplus.com/images/file/37626813214.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/df247fa1ecaf2843989216c85a956b46/zaxazuvazuxadimotivodumo.pdf
    • http://www.aadhar-interior.com/userfiles/file/jigejivevetalunitetexo.pdf
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/t3dtgntrglhejg2q7bobicddpl/27536030047.pdf
    • https://koncnc.com/genelresimler/file/52321076597.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=best+man+toast+funny
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbed.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBED 16792 bytes
font_01_sfnt_off00011404.bin
398a7649baf16ec05b0c9505b249691d66f17e9eabb25d4be4b061c46970055e
pdf-font-stream PDF embedded font (sfnt) at offset 0x11404 10404 bytes
font_02_sfnt_off00012bae.bin
e51eb3d5b90deb4d58e9ccb3247746ef8048e023d9cbfb56bdbf7380dd2f8800
pdf-font-stream PDF embedded font (sfnt) at offset 0x12BAE 17032 bytes