PDF malware analysis — malicious · 802fe4865a06c3d8

MALICIOUS

PDF

84.5 KB Created: 2021-09-04 03:47:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 9f82873fd09c151dbcf019269efa1ed0 SHA-1: d1b552f3caf7fbe3cd9f14216cbbcf8b64e044e2 SHA-256: 802fe4865a06c3d81ada64395cad70f48dc226ed9b96fc9f4642776e903d6745

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS upload directories, suggesting an attempt to lure users to malicious content or downloads. The presence of multiple links on disposable hosting and the use of UTM parameters further indicate a phishing or scam-related attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9912

Heuristics 6

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.
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://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/spsif7pbggqmmblfhaf64gsqdb/pipogesetezewupor.pdf In PDF document text
- https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/f8p0e7ealui05t4acactp8mll5/tafaravaxazelifutozomovo.pdfIn PDF document text
- http://prosquash.by/data/vibemoxidiwepadalotalu.pdfIn PDF document text
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/a8acbf4f2fc3082b74fc56115195a9e3/vekulemabagexejuliraj.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b575189f9f9---webegunezuwogarefugov.pdfIn PDF document text
- http://songiadahoaian.com/upload/ck/files/4306341270.pdfIn PDF document text
- http://www.nbc.com.vn/ckfinder/userfiles/files/63740915941.pdfIn PDF document text
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160ba519fdc12d---robubulo.pdfIn PDF document text
- https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ebca22c914---zotewamov.pdfIn PDF document text
- http://samurairamenbar.com/uploads/files/95397298268.pdfIn PDF document text
- http://tauzetaques.com/clients/1/1b/1b95303171b4519794d6fee637ef680e/File/datudololefikewalinazugaf.pdfIn PDF document text
- https://drlanda.hu/user/file/tiwutediwokaz.pdfIn PDF document text
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c8610fd3b39---59445633261.pdfIn PDF document text
- http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/f007d1c70bab0e925fd05a6e9cb48176/dakemos.pdfIn PDF document text
- http://arslanemlak.come/file/kixufigudukuxik.pdfIn PDF document text
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/56jojbfm0t7de4281r6j92jbof/noxomiloxinosunaj.pdfIn PDF document text
- http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/55361824825.pdfIn PDF document text
- http://chinhsuasolieu.com/media/files/kavawadevenumurakakew.pdfIn PDF document text
- http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc9f28dedf---24456692749.pdfIn PDF document text
- https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/5fab95f360f8917db3d9e9fe4bc74069/pixejijuzato.pdfIn PDF document text
- https://red-adlay.com/upload/files/23412860549.pdfIn PDF document text
- https://hanyauntuktesting.com/contents//files/kiruzujejafodemewawukide.pdfIn PDF document text
- https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/f4732e054e61c4e80d9460692e451758/fejuzowozujomupufutabi.pdfIn PDF document text
- http://www.toptehnik.si/images/noraremuwo.pdfIn PDF document text
- https://ystechpro.com/nbloom/fckuploads/file/61700270679.pdfIn PDF document text
- https://dalnoboy.com/data/filestorage/upload/files/4694019188.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=historia+liberalismo+pdfPDF link annotation
- 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_off0000e5d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5D0	10688 bytes
SHA-256: `f76f742312910aa14c00ba67df5df67ff3e463e7d09f476be0b49058bf3d6e02`
`font_01_sfnt_off0000fe14.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE14	18068 bytes
SHA-256: `ce0fa8459b4f874d636838aae1959171e08d85e5a669139f0f5d0ec9b45fd2eb`
`font_02_sfnt_off00012bdf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12BDF	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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