PDF malware analysis — malicious · a03b144409a0b9df

MALICIOUS

PDF

71.9 KB Created: 2021-09-06 11:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: f7e98516495ade436b5e73d46a18fc9b SHA-1: 4476dba97700c2789077528405955158be6e1102 SHA-256: a03b144409a0b9dfecf319f4b2f13e567f477ca918f3d9fe442676d784114880

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers, indicating malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://pixomot.ru/uplcv?utm_term=past+simple+exercise+regular+verbs+pdf PDF link annotation
- https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/2db440afd47c4dc0bf0167592e470f7d/tupawowemapaweg.pdfIn PDF document text
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160f17ebd544b0---40898699147.pdfIn PDF document text
- https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/fcd4547d1f8ef0c0159270841794dc99/jajopewotaxizovemi.pdfIn PDF document text
- http://logiccpacma.com/ckfinder/userfiles/files/pimamamewilaludolupifa.pdfIn PDF document text
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870ea11aae0---50891042442.pdfIn PDF document text
- https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/9qg11u95cc86cek2s3h0ceq4o5/38072714335.pdfIn PDF document text
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f38865691ba---34996496820.pdfIn PDF document text
- http://stoka-saarlouis.de/userfiles/file/40042070761.pdfIn PDF document text
- http://squarcialupirelaxinchianti.com/writable/public/userfiles/file/sataxupowujad.pdfIn PDF document text
- https://walnutcreekguide.com/wysiwygfiles/file/57239864361.pdfIn PDF document text
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb24bd653ec---9287409150.pdfIn PDF document text
- https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/hh6ut2ae2rbu9rl9mnfh4a3b51/foketilanaxinesub.pdfIn PDF document text
- https://stonebuild.bg/f/uploads/files/zugubukepapojavejatavuwi.pdfIn PDF document text
- https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/67mtkeoahr9mo26s996aor72lt/51276541763.pdfIn PDF document text
- http://hz-kontejnery.cz/ckfinder/userfiles/files/bigamelonobuxewugam.pdfIn PDF document text
- https://binarbaidfabrication.com/public_html/userfiles/file/55595691398.pdfIn PDF document text
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/eff29b0d761ab4e2ac217cf2860763c4/6093785993.pdfIn PDF document text
- http://bike-aholic.com/UserFiles/file/7678574507.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16097615c09046---vifuguba.pdfIn PDF document text
- https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/874ffd200ebb74721760c172200ee430/doborukexutibesepumikaf.pdfIn PDF document text
- https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/b4f4bd46bc62a29606973b633ba7ba3b/94088938904.pdfIn PDF document text
- http://envigest.cz/upload/file/manibirelivalilomanoti.pdfIn PDF document text
- https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/5713798c65dc101e4f271e2d3e69927e/nuduwo.pdfIn PDF document text
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d2150bf50---muves.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_off0000b8cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB8CB	15556 bytes
SHA-256: `4c0cf3ed7ec59b5eab79284e153cec0cfd75c802e9bdc239948efc38907ef2e2`
`font_01_sfnt_off0000e05b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE05B	11148 bytes
SHA-256: `a83e97bc12f9fc66ca5e49827171a2fda1f448d066ba05345d933f757ed51fd3`
`font_02_sfnt_off0000fa14.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA14	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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