PDF malware analysis — malicious · d66870673406fb6e

MALICIOUS

PDF

78.5 KB Created: 2021-04-21 10:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17

MD5: c3b8c3f8605c24c02a554f27126bd5e4 SHA-1: 5d2552cc83e7368f5ea11d26b36cb0d24cf78b64 SHA-256: d66870673406fb6e63bb2ebde11c29041408f59d62b61dcd6015aafea69ad45b

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a likely attempt to create a link farm for SEO manipulation or to host malicious content. The presence of external URIs suggests the document is designed to redirect the user to a potentially harmful site.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://nipisod.ru/strik?utm_term=how+to+unlock+greatcall+jitterbug PDF link annotation
- http://homebig.space/prison_break_trke_dublaj_3._sezon_izlegg8z5.pdfIn PDF document text
- http://momentshop.website/action_verbs_worksheet_grade_42zmcy.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388271/normal_606c888c238c0.pdfIn PDF document text
- http://helplnstagramcontact6088758.com/motogp_racing_17_championship_mod_apk_revdlnbhnp.pdfIn PDF document text
- http://tesevamomavuruf.22web.org/free_creative_cv_resume_template.pdfIn PDF document text
- http://klossheff.xyz/tolota2g2yz.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410965/normal_6001bf5720906.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4406169/normal_5ffdc9688839c.pdfIn PDF document text
- http://simultaneously.space/kajanusufcgbv.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478146/normal_604158b9abf3f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479678/normal_5fdc81637b7a9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422161/normal_6046a3cdbbb05.pdfIn PDF document text
- http://porerapeboligos.iblogger.org/78773839355.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/c203a5e5-418d-4337-9dbc-3b2205ba01cf/fajawev.pdfIn PDF document text
- https://80c93ba6-74df-4afb-9852-3a83eaba20e3.filesusr.com/ugd/4cf28d_4b01ef2214f44240b454efa276b523f1.pdf?index=trueIn PDF document text
- http://roxewew.epizy.com/destiny_2_leviathan_raid_guide_spiel.pdfIn PDF document text
- https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_8dad0e026f464dba8858164be8fa1a55.pdf?index=trueIn PDF document text
- http://vonolukover.epizy.com/83363578743.pdfIn PDF document text
- http://vurosija.epizy.com/jeep_grand_cherokee_1995_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b304ac5a-307c-4109-aecf-82a5919bb412/18366243032.pdfIn PDF document text
- https://90e68d66-75cd-4f9f-aa76-03b1e6b67b4d.filesusr.com/ugd/324cd8_516998cca12b4d06bdf8a797c46ba752.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/2a8abd9a-084d-416f-b9ca-4f55d3fe42ae/tcp_ip_illustrated_volume_1_1st_edition.pdfIn PDF document text
- https://78e27e65-9996-4239-a63d-7a21722db537.filesusr.com/ugd/03f576_98b11d723dd04bc080ca196efe9f5097.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e871.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE871	5120 bytes
SHA-256: `3447fc29e53dc53c9f4e465cc93e18a4e70f5f31c0c11d103356068cb9ab6625`
`font_01_sfnt_off0000f9fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9FC	2120 bytes
SHA-256: `19675052850ee7447b76ed5701c2ea85622244cef99cd758c822df976c39b84a`
`font_02_sfnt_off000103a0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103A0	11468 bytes
SHA-256: `23896121bc834ace5aa61e346d1110d05a794d74b5855a6f28539f21c78b817b`

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