PDF malware analysis — malicious · 8e7aab44fb4e3952

MALICIOUS

PDF

78.5 KB Created: 2021-07-06 20:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25

MD5: a5f64e98da6347df6759420c35113b8a SHA-1: 4a58da2035a1e1b1bd896948cc8c99dade7a961e SHA-256: 8e7aab44fb4e39526319a4ccf4bcd17a1ce714cb7984e9862698e55c8bd6a278

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing or trojan distribution attempt. It contains numerous embedded URLs pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection further supports its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.9949

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://laborke.ru/uplcv?utm_term=once+im+seven+years+old PDF link annotation
- http://benhvientantao.com/img_duhoc/files/63951173450.pdfIn PDF document text
- https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/gepadigofobe.pdfIn PDF document text
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/4cc938e126ab14ed6917d49043318013/tuvujukedobuw.pdfIn PDF document text
- https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d1d6f2641---52359839500.pdfIn PDF document text
- https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/bgkeb5d7rkfl2skq9bmu3hg216/91592391139.pdfIn PDF document text
- http://bereanbaptistashton.com/clients/1/1c/1ca8668e480cca1e897b6add33210fc6/File/kikefalagubakunudaje.pdfIn PDF document text
- http://mujuerp.com/uploads/ckeditor/files/20210526202333.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebc5fd9bd0---guxalekudugolomofenimewi.pdfIn PDF document text
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ue5phqna97oppv85usrhcoa2n6/39034706344.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/9594d3759970500f5934bd109959f80e/59557931952.pdfIn PDF document text
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/44184f7a805accdf568239c2c0b884df/pixiti.pdfIn PDF document text
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/c86pvk7jlv0napr1h4105mfha3/54897726504.pdfIn PDF document text
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aaf99365fe8---29078729886.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a741df6f59c---57606134750.pdfIn PDF document text
- https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/875f035e9c9f81fd14b552800b718db2/92337006591.pdfIn PDF document text
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/64ae0acb6b57aa085ed93aa01c3714d6/karirilu.pdfIn PDF document text
- http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/jokevudanaguzer.pdfIn PDF document text
- https://sharpconsulting.us/app/webroot/ckfinder/userfiles/files/2565918707.pdfIn PDF document text
- https://eccdc.org/application/webroot/userfiles/file/24389336138.pdfIn PDF document text
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/5241a3839cebc565518a35af33b3c61b/muvubesobe.pdfIn PDF document text
- https://hamzsabegi60szallo.hu/UserFiles/File/xafisevifub.pdfIn PDF document text
- https://noddy.nu/images/file/64797960570.pdfIn PDF document text
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a489a021dd7---17368057531.pdfIn PDF document text
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ac3aba34c---16105233580.pdfIn PDF document text
- http://fsgpj.com/upfolder/e/files/20210613085133.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d050.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD050	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e867.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE867	10640 bytes
SHA-256: `e0a68acac630047f75e64a3f98cf0bd62ba60a4a378bddf3255f920cdf595211`
`font_02_sfnt_off000100c3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100C3	16480 bytes
SHA-256: `7e7d9051ed47d8271597515e67cf25289d6be50f8b8b8b74f9d1281e609811a5`

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