Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc34dbb2e9912b56…

MALICIOUS

PDF

81.2 KB Created: 2021-09-19 14:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 13ea13fabe50f482cb53c6ff51a7d46c SHA-1: 097c3a04468789b10efee5b0dfd0d90a75761cb9 SHA-256: cc34dbb2e9912b565962f04ec4dfd7bb7b0789fee98a47564b2ec67614371d23
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised websites or disposable hosting, indicating a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of external URIs and link farms points towards a spearphishing attachment delivery method, potentially leading to exploitation for client execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://huntic.ru/uplcv?utm_term=ps4+android+apk+free+download PDF link annotation
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/d7f50a7b210416ddb903d9993a4fecd2/23836800842.pdfIn PDF document text
    • http://specimport.by/files/files/bukegufanebedefe.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a7c0fea252---89487818184.pdfIn PDF document text
    • http://www.bongbansaigon.com/uploads/files/56842599944.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/a266d1208c76625c81dc878762b4558b/55141415362.pdfIn PDF document text
    • http://synerfreight.com/syner_upload/images/files/ropupuvidede.pdfIn PDF document text
    • https://fallahi-sch.com/userfiles/file/figopasolitibamevusa.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/161460420da6e6---fopawuwofozomezazo.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16137e58a919ba---3086873186.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613099ab72d50---23048140129.pdfIn PDF document text
    • http://alles-vom-schreiner.de/userfiles/file/rojezazig.pdfIn PDF document text
    • http://hungthanhauto.com/luutru/files/94662035310.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16134b7e1db6b4---miwezaneturutidazuz.pdfIn PDF document text
    • http://tainanrup.longi.tw/uploadfiles/files/20210909_065855_9294.pdfIn PDF document text
    • http://frickcontrols.com/uploads/files/pofijikaronapa.pdfIn PDF document text
    • https://atrax.hr/files/gefixizaroponepilolotiki.pdfIn PDF document text
    • https://8cj2aja7-8mxb.com/contents/files/totedarudodokufuxazarasap.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614095cd67cdf---97212254102.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/161431a649ab4d---86399520777.pdfIn PDF document text
    • http://duquenne-moteurs.fr/webroot/upload/files/12726537133.pdfIn PDF document text
    • https://sportyou.fr/ckfinder/userfiles/files/6069461473.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161425abb60da5---denag.pdfIn PDF document text
    • http://ruresept.ru/files/file/21801432159.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/161387c347b89e---76420483989.pdfIn PDF document text
    • http://pumarecovery.com/userfiles/files/72576122332.pdfIn PDF document text
    • http://moveworldtogether.com/datas/files/75753367097.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_off0000d864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD864 10648 bytes
SHA-256: f05e4af08edacde01c981c1b2b5d8f5e6bdbc52a8929c36ff78bd21f369e0992
font_01_sfnt_off0000f0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10909 17844 bytes
SHA-256: 51602198421813d481ded592ba517c3fab90f7a203fbb12f316dbc174aa27d4e

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