Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2412fff028e9963…

MALICIOUS

PDF

88.2 KB Created: 2021-07-01 17:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5a16f277a9936549b7697798b4e7de7b SHA-1: b2ae88d658b681c8f383ad1c3bd2f493881fb2ea SHA-256: f2412fff028e9963c296c41115f1afb1a0e5b57a3bb5cf0358528799cc0cb1a0
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to numerous distinct hosts, many of which are compromised WordPress sites, suggesting an attempt to distribute malicious content or conduct phishing. The presence of multiple external URIs and link farm indicators strongly points towards a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c44fd7b75da---51335110838.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/891dd2041adf77d1d76c1c74a4efcee5/pebewagutot.pdf
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd2aa1dbb7b---3387828312.pdf
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16095f2af46654---75116413181.pdf
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/4a633dcb7569ca24677115ccd38450b6/zomuturejidagejaridufogu.pdf
    • http://derma-dts.de/files/file/winijumam.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ku069c1tuc29jtnpdlpk0qmoh4/roxemonabubawo.pdf
    • https://abe-rdc.com/userfiles/file/86784101089.pdf
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/fa99cd59b01fb61a1c371fa597798cf2/55084327403.pdf
    • https://nhatngudongkinh.com/upload/ckupload/files/bifuzedewexiwigakunoxuj.pdf
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/44m9ehed86acncks69gbme5b3h/kazedemitirizuderune.pdf
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/mi4l1vi68rvc7shrrjqig6rcg2/kekenutidulose.pdf
    • http://kayamedbursa.com/userfiles/file/71389829419.pdf
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/58bv3i7mlpdnv7tt469butj3v1/60976732467.pdf
    • http://yjsyrj.com/userfiles/file/tojirosefuwawunizut.pdf
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16078400ab8935---93490798930.pdf
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608c987a6be10---67106975329.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/0fptn45j3ek5luumpdt1gu17r0/tuvovonikusizamoz.pdf
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c577f59d816---70818384913.pdf
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/2250c8dff1e840bc250baed560f5855d/89592723525.pdf
    • http://gocep.org/data/userfiles/files/loxekadimovadovorerun.pdf
    • http://asupuro.com/upload/save_image/files/nisifagotanopizerofexama.pdf
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/i2vli9bp1kdk5bmeoao1cb1702/gozovo.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=6+letter+word+starting+with+s+and+ending+with+r
    • 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_off0000f48e.bin
f6b6d079942ab20c89a3109885a9bd5a5e9bd9a0a5456ab7c2b647c0b6f8f6a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF48E 10684 bytes
font_01_sfnt_off00010cdc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CDC 16792 bytes
font_02_sfnt_off000124ee.bin
d4cac31601c9fb0baeb1d3b0d7b66b07040a6a27356fd7e995b39d5b4ac5a81b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124EE 17584 bytes

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