Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc7933747e83459…

MALICIOUS

PDF

81.8 KB Created: 2021-08-17 04:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 18d16b4102b0a27afcbc485ce6ae41f8 SHA-1: e2328d9071d99684679b6048835be14119086b48 SHA-256: fcc7933747e83459fe1cd1be985ab18c9b0cb1d8708e018584d3f0280439607c
156 Risk Score

Malware Insights

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

The PDF document contains numerous links to compromised websites, indicating a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of multiple distinct hosts and the use of UTM parameters in URLs point towards a coordinated effort to lure users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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 https://infrive.ru/uplcv?utm_term=windows+8+indir+t%C3%BCrk%C3%A7e+full+indir+gezginler PDF link annotation
    • http://influences-vegetales.eu/assets/Image//files/74580341064.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/e8oor92uresrd37h3q8iphc3qm/27861582966.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/16089cece2e53f---kuwuwajeluwikimebigaxewur.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a0eb736f63a---jojokuke.pdfIn PDF document text
    • http://architettorobertafasola.eu/userfiles/files/88273259231.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/51e7fa49ff31ae7cb99235a8403dd4a9/25176411628.pdfIn PDF document text
    • http://bud-drog.pl/userfiles/file/bijuw.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c92b87448a1---gutumixik.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/7930528532.pdfIn PDF document text
    • http://thevale.us/userimages/jekamexerazo.pdfIn PDF document text
    • http://csc-0411.com/userfiles/file/20210716012015_lu1l1h.pdfIn PDF document text
    • https://betenenergy.com/sites/default/files/file/15310885751.pdfIn PDF document text
    • https://mkontakt.pl/dat//file/56835533224.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db121e6b47f---topenejepudilipidasogulef.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0ce1bda29---mixuzuwoxazutadifafaj.pdfIn PDF document text
    • http://rexant.by/upload/editor/files/35336111414.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/22be8d2e8fc12ba7521de8a30a2e1fb4/saxilepusut.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c14d9ebf5fb---44804562738.pdfIn PDF document text
    • https://akrmedia.no/ckfinder/userfiles/files/50953182077.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/21380983542.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9b22ba897---12887605911.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ba2fec0bb---fekimusazenukixus.pdfIn PDF document text
    • http://childhood-matters.com/clients/49507/File/5571427609.pdfIn PDF document text
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/ca57eaf50450a9ab202a8b7b603f336e/zimedujeduletaxolenasozob.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 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_off0000d741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD741 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF58 11296 bytes
SHA-256: 1fc6f223cfc56d1f7f6775e6f0ed29d0d60ef0a737b19fe4f5eb2da1a755d8a8
font_02_sfnt_off000109a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A1 18416 bytes
SHA-256: 95b725c9a229d4d80eb42a388d0626e71c81702b6ae5cab69521eb0f615079f8

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