PDF malware analysis — malicious · 5fd343790b6cbbe8

MALICIOUS

PDF

90.1 KB Created: 2021-08-02 04:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21

MD5: 6aa930ca9c6cfecd3cce75f916fb5f50 SHA-1: 1f22a02807c0f012aa3ffcf3809cf06f49910ffc SHA-256: 5fd343790b6cbbe8f0dfccc2b3353cdf006628bc6f4b9191dd4f58f011a0aa15

216 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of a phishing lure. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document attempts to solicit sensitive recovery information from the user. Numerous URLs pointing to compromised WordPress sites and disposable hosting suggest a link farm designed to distribute malicious content or phish for credentials.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/4edf7cea97019d90e941d9f57c950dd1/xeduxogoleturususuze.pdf In PDF document text
- https://appvid.eus/userfiles/files/wisegegoxigemewesob.pdfIn PDF document text
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c1153344a85---kavepiw.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160dc42272d310---9860944530.pdfIn PDF document text
- https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/1bd4d12ffacb5d4b68cc366a5eabf2b2/42305166126.pdfIn PDF document text
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16080ca2f8e459---23651287883.pdfIn PDF document text
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160af1d06bf60e---70958788593.pdfIn PDF document text
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/8074a7481ad6aa543b8c6bf026767681/54979739304.pdfIn PDF document text
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b586748aad3---fufajizirakadafobu.pdfIn PDF document text
- http://kasaitogo.com/uploads/files/88534039611.pdfIn PDF document text
- https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8393f2b17---wipegab.pdfIn PDF document text
- https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/jlllupa1ickscnqvl5q66vv3sm/86638733923.pdfIn PDF document text
- https://bloomeng.com/uploads/3576778700.pdfIn PDF document text
- http://hilltoplancers1975.com/clients/13753/File/xunugelorupodit.pdfIn PDF document text
- http://tecsun-moscow.ru/docs/file/samam.pdfIn PDF document text
- https://karinbentum.nl/uploads/file/27937890683.pdfIn PDF document text
- https://tort-art.ru/userfiles/file/noxijoxokizuvijemapub.pdfIn PDF document text
- http://haozuowenwang.com/imagefiles/file/1157053549.pdfIn PDF document text
- https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/cc82fdb1567bec5a008de40e15001bcc/1474933878.pdfIn PDF document text
- https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086d2202166c---88413135956.pdfIn PDF document text
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090096341b53---favonoxabolasoforejesu.pdfIn PDF document text
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/1776ae9c88491ecbbce3989cfc6b961a/57975688233.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=sonic+the+hedgehog+backpack+ukPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f17d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF17D	10884 bytes
SHA-256: `8a5bf1f5d4e556354412a446a87482a66c002eebf882911d0e606fd97a9b25bb`
`font_01_sfnt_off00010a29.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A29	1720 bytes
SHA-256: `9c3c50ca7885eb1b87261f6f74ba185aca171ae216209544253fbc3ee3acc073`
`font_02_sfnt_off0001124b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1124B	18256 bytes
SHA-256: `79911241e6a6e0b6f8a2eb403130cc3e14b21dbf67bbbc2d343f94b20b9b675d`
`font_03_sfnt_off000141f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x141F7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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