Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe3f1cf7275eede…

MALICIOUS

PDF

140.5 KB Created: 2021-07-06 02:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 880a4c2dd8fa23dc4680a3d933e1de7d SHA-1: 36fcc07ef9bdec5c03fe3572a81eb3e12874c3e8 SHA-256: abe3f1cf7275eede237613fd2f238818cb377ed5e0b52ba7a7394dca9da8f9bd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to further malicious content or phishing pages, aiming to trick users into revealing sensitive information or downloading additional malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9007

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 https://queure.ru/uplcv?utm_term=to+be+impressed
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/78c67157fe9d771b88c346355e542b3b/47685034167.pdf
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/b2a9c230936b63f3e7b67be2bb27fe31/69542779186.pdf
    • https://brod-plovdiv.com/images/pijesanezedofusar.pdf
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160909bab3650f---fapera.pdf
    • http://sentezetutmerkezi.com/upload/ckfinder/files/69996216419.pdf
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c9d797b4b9---jaxajilerogedupize.pdf
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9b8a2ca9a---worepibefokirobupimewigi.pdf
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/88301228943.pdf
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/22e984acd9cd42e0e19aa67bccedf634/14738216018.pdf
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073fc1b4d8b6---kuvizidexulapinu.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9926d8a75---jojep.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bf7f4d43d1---xilurixikezozesamamovife.pdf
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab430176dc7---bipukujotixugu.pdf
    • http://voxel-avocats.fr/uploads/file/60475659900.pdf
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b82506b48---52295201682.pdf
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/l8e0ie0nfvb4g3n4f58iojdsn3/ragesip.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/ad8c048510668e3366bc2ec7eeb334aa/6255629252.pdf
    • http://libertyquad72.fr/userfiles/file/86320139536.pdf
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160722dbe2f364---75335131123.pdf
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160844b5e0a17b---nubulekofalud.pdf
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608091e6aa727---dotidebun.pdf
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/2976a475d21c04003f3f9fafdf8ef6f7/6246485964.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/1afbb1a2c18b8f062abe58741b906a85/zuwivadutojevojejijulepox.pdf
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a237ec8a51b---safabuxafet.pdf
    • 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
stream_002_off000142a4.bin
eb2edd401afa5e6f0a0592900c2b11c8f0786e4b0fae779ed4aa3680127ecff6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x142A4 29680 bytes
font_01_sfnt_off00017ae3.bin
6f1bac207d10cab749bed58fdf7b02c66c1b4fd26c5f94afbfb9df968a84b5fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17AE3 10248 bytes
font_02_sfnt_off0001919e.bin
a0c85add2726844b5a5190ec93cb20534cee1bd0733a16d1ebdd4a4ca8ce5c85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1919E 37944 bytes
font_03_sfnt_off0001e51e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E51E 16792 bytes
font_04_sfnt_off0001fd2c.bin
55c6f73480d809a371098b3c2487e03c29549cc41d802d1e3099f4edd953ee81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FD2C 11816 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.