Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e9510a9506430e…

MALICIOUS

PDF

88.8 KB Created: 2021-06-29 08:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9c69e6df061ab2f16ccd1e8a300e890b SHA-1: e47ed90ffb741bd66b748fa28eebb7c5b175b315 SHA-256: 06e9510a9506430e5c025ec14df0e7df71f3bfafc5c5b222709b0a5c9ff850db
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is often used to redirect users to malicious websites. Multiple heuristics indicate the PDF acts as a link farm, pointing to compromised WordPress upload storage and disposable hosting, suggesting an attempt to distribute further malicious content or phish for information. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a138e43ce77---557409199.pdf
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d96c1873b---japaxabatelolobisarap.pdf
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/1becf680449ee7b457002c79f4319293/wobazuvenarobalu.pdf
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac90fc1fea---vaxifuxumujitivubiwaje.pdf
    • http://classiccar-jp.com/js/upload/files/85352930931.pdf
    • http://farmina.ru/uploads/files/tozuwutom.pdf
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/6a9b269a8cce8cac847efbe4e906c6fc/bajeniwetagirap.pdf
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d3516c5f5d1---55430332027.pdf
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/96f95203837c0ba05960b46bde1bd527/14229492764.pdf
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/f2c5f31eed8953e057e77148afb4c657/gegubokejog.pdf
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/e4e88dbed66157b59eb89d8974b7de0a/lomobufekegovemi.pdf
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/399c12d4744c402570e69b836da35c58/fogosefilanazubujax.pdf
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7a8f2ecbf---lunivivudojadakudamos.pdf
    • http://m4klynchburg.org/clients/3/34/34420611de4c9c7593cf5e5fe12de6df/File/19072365174.pdf
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a2901eb8d8a---sajebupusumibol.pdf
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/4caqbkoc068i89uvrotttjsplq/4888702386.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/794u7k1a2bauuja662d4q28ga2/piren.pdf
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/40266cd8b3173ecb432096e9cf788fc5/24434833392.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160972a320361e---tetenoxitafavuvigisexiwat.pdf
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/c8374f34910f1f81769648d4bab55d44/16348793255.pdf
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/9741k2grohnk64jbiq04246grg/85157597918.pdf
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/db161d6f3acf98ce38a4cac8a19c8d90/27133818104.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c63df1ca46e---22737460769.pdf
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7f86397574f6d9c0b012b0af5feebdc8/69656810021.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=beautiful+motivational+quotes+in+tamil
    • 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_off0000f72d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF72D 16792 bytes
font_01_sfnt_off00010f3f.bin
6a069b5c751a4de4dc15182a4c94807a6bc0d7cf3660578154663cea2ef1f7f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3F 17068 bytes
font_02_sfnt_off00013b89.bin
5bf103cf6ff26ef39f5a0e720b127fec41bace11f558ad7ed029982ce54f86f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13B89 10640 bytes