Malicious PDF — malware analysis report

Static analysis result for SHA-256 984e7ca552f615f3…

MALICIOUS

PDF

143.7 KB Created: 2021-07-02 19:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1bd363f1d4551758c2c2df77d29a9052 SHA-1: ec620885956e427f9795463489c9adffb7579d6c SHA-256: 984e7ca552f615f356c003581d693533e295466bc3efe2dac0b18fda189b3799
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a PDF link farm, with multiple URLs pointing to compromised WordPress sites and disposable hosting. The presence of these links suggests the document is designed to lure users to external malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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://www.onlinetemsilci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081ceab1672c---sugomejofomuruwujaj.pdf
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a09a1f8f---seluziko.pdf
    • https://marmarases.com/upload/ckfinder/files/xegijekuzizevusabededa.pdf
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/i1q4nvkhhmgsrpq5rop6006neq/mumadokerimuzofovose.pdf
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a9a5210f---89968954543.pdf
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/6d98e36e016185e0c8d1e2498c71bbc7/15148242465.pdf
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/069476970313eb7481a7c3e1e4efdfdd/83203049092.pdf
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/b9db0136fc816a9d394e86a61a1dc366/wadatepiz.pdf
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084304f2d4bb---nanemalafodepejamoxabar.pdf
    • http://oilandgaswork.com/userfiles/file/golupakijukejafi.pdf
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/f75af5193ebe436d32840376c41eeccb/80671814505.pdf
    • http://cokhibaosang.com/media/ftp/file/wedenajubupupu.pdf
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f86cdcff61---duvogavejiwowikuv.pdf
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b7ffd7e4bd3---gagun.pdf
    • http://sacoorhealth.pt/site/upload/file/lejasugezarewenup.pdf
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b32b779cd---zisarepogakenorigogejagu.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/e7c1e29fa7bd00df7a6808cd58511344/34247157573.pdf
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/81av4rqekaioc9if2k56kv62q1/57539383827.pdf
    • http://spreewaldatelier.de/img/editor/file/35981533508.pdf
    • http://webbuilders.com/files/file/kusixojajobizuwex.pdf
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761182a133f---pekunurabateza.pdf
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/o9c1pubhhvarj9p0d3hcv3jvb0/punerujuz.pdf
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608971d6aca5f---89158598346.pdf
    • http://ozona.pt/wysiwygfiles/file/92947927938.pdf
    • http://liberty67.com/clients/41815/File/sobipiwibirogutitofijamu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=online+quiz+system+project+report+in+java
    • 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_off0001cb2c.bin
4aaef134d4b1b355595ddf84c5e8f635406029a04d3a837a9aafabc402ebe410		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CB2C 19620 bytes
font_01_sfnt_off0001fe54.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FE54 16792 bytes
font_02_sfnt_off0002166b.bin
d2938188afe7a692a2a0987a26ffa036f10bd24dbd6417b468386aac854196fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2166B 11176 bytes

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