PDF malware analysis — malicious · 459ca055e0f1663b

MALICIOUS

PDF

79.0 KB Created: 2021-03-14 01:42:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: d863c9e2848fd9c4eac9ec2471613c09 SHA-1: a9431661ec9dd1dc6906f92fa0bb58574c2a7f82 SHA-256: 459ca055e0f1663bc0fc099bfe2bb7142fcfedd82056c83c280acbf7579dbe79

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'xezojetit.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Autumn in new york piano sheet', indicating a social engineering attempt to trick users into visiting the malicious URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/123?utm_term=autumn+in+new+york+piano+sheet PDF link annotation
- https://cdn-cms.f-static.net/uploads/4446400/normal_602b9b65be723.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4384295/normal_60093634ae39d.pdfIn PDF document text
- https://wigalibole.weebly.com/uploads/1/3/0/9/130968912/lojuxelafi-sewodexifukata-ponuxerikoriw-baboxitamukul.pdfIn PDF document text
- https://milolumixi.weebly.com/uploads/1/3/4/4/134459833/524ab681abf4890.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387709/normal_602ec883de02f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470409/normal_601952b7e2dba.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4423148/normal_5ffcf9a86aee3.pdfIn PDF document text
- http://gikikobudip.22web.org/bulats_practice_exercises.pdfIn PDF document text
- http://tajavupirewu.22web.org/44864057825.pdfIn PDF document text
- http://fosinofabeveso.22web.org/housewarming_card_templates_free.pdfIn PDF document text
- https://manumuxalobo.weebly.com/uploads/1/3/5/3/135387638/6407284.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://c36efdde-2309-4ce2-a10d-b6df2ce12cd8.filesusr.com/ugd/e98059_edc9801b49b4485fb181b62c2c95a840.pdf?index=trueIn PDF document text
- http://vojapulipono.epizy.com/can_you_get_rock_band_for_xbox_one.pdfIn PDF document text
- http://lidusikopi.rf.gd/great_value_canned_chicken_nutritional_information.pdfIn PDF document text
- https://c2c662fa-00ac-4c69-bf5d-04da7d6c99e2.filesusr.com/ugd/9b33c5_bd91c7303e374d42a3d82409a71feb74.pdf?index=trueIn PDF document text
- http://dukukanakimazup.epizy.com/day_by_day_hymn.pdfIn PDF document text
- https://2903667b-e544-4972-ac7f-e5855aaa9b37.filesusr.com/ugd/2cc660_3bef6018bf2243c1b691b70044e0fe80.pdf?index=trueIn PDF document text
- http://zomimek.epizy.com/75617831145.pdfIn PDF document text
- http://zunerewema.epizy.com/ladavusujozesur.pdfIn PDF document text
- http://jurolabadujo.rf.gd/kosisasixalubefo.pdfIn PDF document text
- http://xadatadute.epizy.com/how_to_drain_fryer_oil.pdfIn PDF document text
- https://ba10d46a-d7c1-43af-8542-f1a50f31aa8a.filesusr.com/ugd/4dded2_75fef63c8f60420eb525e432922b5901.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_off0000e8cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8CD	5156 bytes
SHA-256: `72665297752c6aff8f15013464d83a971480cab60407d0c3bb47e38e050a1ba8`
`font_01_sfnt_off0000fa3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA3A	11444 bytes
SHA-256: `0caccc2992e064ebba2cab91664a3dd31c4ca445cb98e2930de7350c334e5ce5`
`font_02_sfnt_off00012148.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12148	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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