PDF malware analysis — malicious · 34b85aee3669e14f

MALICIOUS

PDF

99.8 KB Created: 2021-03-19 07:19:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02

MD5: fee02724f49377247e930f5e4ee038aa SHA-1: 028b47f1f4b3e4a39a5cbd40765cdac8a2c973e6 SHA-256: 34b85aee3669e14f40d81187c6e9d16cdafea7c6c82b2583a4ee91b91d53cb51

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains numerous embedded links, with one prominent URL pointing to 'resalured.ru', suggesting a phishing or malware distribution attempt. The presence of many links on disposable hosting also indicates a link farm tactic, common in phishing campaigns.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://resalured.ru/wix?keyword=molaridad+de+disoluciones PDF link annotation
- http://vijufik.iblogger.org/55494270804.pdfIn PDF document text
- http://wozonos.22web.org/how_to_get_rid_of_call_forwarding_on_iphone.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448538/normal_5fd7740652606.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4499984/normal_5fff79401aac0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495037/normal_5fde3f3a822dd.pdfIn PDF document text
- http://dasukuged.22web.org/decision_tree_examples_in_retail.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480382/normal_5fd7b2d564d00.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4404313/normal_5fcf74ddbe964.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://zalipimotumotim.rf.gd/hurt_feelings_incident_report_form.pdfIn PDF document text
- https://171e2b11-24ea-4535-acac-f971ec821c4b.filesusr.com/ugd/a07927_63f075f2f09e415981c3ff8d29b1a923.pdf?index=trueIn PDF document text
- https://12dd324c-696b-4d67-8c19-991f3eacec2c.filesusr.com/ugd/eeb7bd_0b94c565190a46a0b8c01340f934fc7e.pdf?index=trueIn PDF document text
- https://712e085e-8422-4094-ae2e-709d430f1fc9.filesusr.com/ugd/bf8edb_0f09d5ab4cc44c74946d656b1ad446bd.pdf?index=trueIn PDF document text
- https://e4fb9bf1-a3d6-4767-9bf2-2a1021e5dc09.filesusr.com/ugd/53cfc7_fa9d4984b2f44aa1bbbec6d06b2a5a80.pdf?index=trueIn PDF document text
- http://takodibunogudas.epizy.com/automobile_mechanics_book_download.pdfIn PDF document text
- https://s3.amazonaws.com/lazesej/likokokejabovusebivore.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a2a62414-9ea3-4582-85a1-920fa16f42ec/fafafi.pdfIn PDF document text
- https://s3.amazonaws.com/mefadedosuw/football_prediction_apkpure.pdfIn PDF document text
- https://4a7d9d2b-1d67-446c-8d6d-bdd3043d1f60.filesusr.com/ugd/c3d078_825d00aedf6642008484d1c77449b2f1.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tobojelusiwi/vobufefe.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/65ef854c-9f3e-46ba-914e-d5c9c92ff235/99786377292.pdfIn PDF document text
- https://s3.amazonaws.com/bupaxomu/53057541049.pdfIn PDF document text
- http://xumugipetoje.epizy.com/money_tracker_spreadsheet_template.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://scripts.sil.org/OFLIn 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_off00012c86.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12C86	4940 bytes
SHA-256: `1e5316b16e5bf85f0b2178e060fddb9cd7a7acf6f2b6d3cd57f48dabdf2fe4c6`
`font_01_sfnt_off00013d66.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13D66	14044 bytes
SHA-256: `ac5a6edc4fca9ff266b5634474f17bae439da20a87174655d896ed197fe5ad21`
`font_02_sfnt_off00016b98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16B98	16060 bytes
SHA-256: `2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357`

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