PDF malware analysis — malicious · e6f0e34d0c9ca44b

MALICIOUS

PDF

81.3 KB Created: 2021-03-27 15:36:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: 3d14b4fa57b9266beb9edf056dd2c9ea SHA-1: 5d471fc77e0ef1fc669ae78bb88cfac150c9de76 SHA-256: e6f0e34d0c9ca44b6c44ff53da312315a27e5d0e1427d154d68c73c93f4fa215

254 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'https://dafemum.ru/wix?keyword=zygor+guide+classic+free+download'. Additionally, it exhibits characteristics of a PDF link farm with numerous external links, suggesting SEO manipulation or a distribution mechanism for further malicious content. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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://dafemum.ru/wix?keyword=zygor+guide+classic+free+download In PDF document text
- https://cdn-cms.f-static.net/uploads/4379477/normal_6058420351f3e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465908/normal_5fe75da9b837b.pdfIn PDF document text
- https://cdn.sqhk.co/sovokeduseb/MHgegjn/cut_it_off_idiom_meaning.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4484993/normal_5ff3ce41610ec.pdfIn PDF document text
- https://cdn.sqhk.co/petawelesup/LifUigD/bivajamejutibimemalu.pdfIn PDF document text
- https://cdn.sqhk.co/togixulala/2tFuKjc/nugixewejerodefipafaximo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401538/normal_602eb4d577373.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://2ffa788b-df2f-461f-b9c5-573bec542745.filesusr.com/ugd/374ce0_d1359617d02440b0854bc84e79aea409.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/waxapoz/rezozizikum.pdfIn PDF document text
- https://s3.amazonaws.com/mefonevimimix/practical_english_usage_by_michael_swan_new_edition.pdfIn PDF document text
- https://s3.amazonaws.com/vezumobigodub/agronomic_soil_and_water_conservation_measures.pdfIn PDF document text
- https://8ac5c8e1-9174-427d-95c2-90bebb9f105a.filesusr.com/ugd/44b221_b282055588f24718b296e5264f13352e.pdf?index=trueIn PDF document text
- https://b66a6cc6-7028-4fd7-9d19-084b2b27c535.filesusr.com/ugd/4015cf_2d3242d7392d47aaa59d74c67bb1dce9.pdf?index=trueIn PDF document text
- https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_e827923d634d4f9abb5dd85f7d8bc396.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/telasebisu/surivolobomugulutataju.pdfIn PDF document text
- https://s3.amazonaws.com/suzixegazunow/73723153846.pdfIn PDF document text
- https://s3.amazonaws.com/wujixus/emulator_ps2_untuk_android_2018.pdfIn PDF document text
- https://7f3356c1-ec1f-498a-9d41-5b36c14d87b7.filesusr.com/ugd/98d33d_ae9176bc5db44ef6957bd25b5e5fafdf.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/wowonesoribu/jepaxebepiwo.pdfIn PDF document text
- https://f608bf75-187c-4b28-9621-af925c05c2b6.filesusr.com/ugd/05e3ad_b7e9d2b4e86f4f3ebb56ad24aace62fe.pdf?index=trueIn PDF document text
- https://107a3552-ed21-4f5d-95e3-510b6eae4444.filesusr.com/ugd/21bbef_d0bc6a86d84d476da5a06cf6caf2668a.pdf?index=trueIn PDF document text
- https://7aff118d-26f6-4d76-9bc9-1838009e7274.filesusr.com/ugd/f80014_1e7d1202638247588ce0ef0646526b30.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
- 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_off0000e6c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE6C7	5340 bytes
SHA-256: `a9f490409aaa9a9657b0954272649dff90f0acb6b52374fd780e235d689c437b`
`font_01_sfnt_off0000f920.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF920	11680 bytes
SHA-256: `b38afd1ffb142f96d69655d3736194e2886bbe10a5f02f90c469d989f198275d`
`font_02_sfnt_off00012043.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12043	16632 bytes
SHA-256: `7ed423fd6f64a2accaab24a388a557cab9318e50e2ef4475c53ca1e35efe0f17`

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