PDF malware analysis — malicious · 3b78f61e8113b5e1

MALICIOUS

PDF

125.0 KB Created: 2021-05-24 18:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: e4c648b92a54d5bbfaac6ef399bfc816 SHA-1: dc7df8beedd5cbc26c4775755ea4b02e23c7da55 SHA-256: 3b78f61e8113b5e1b7c1eef1f545135d66b37e4f02bbf761fe7bf73e827b48dc

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs suggest an attempt to direct users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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 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.
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://gimoguvi.ru/strik?utm_term=how+much+pollution+does+the+average+american+produce PDF link annotation
- https://cdn-cms.f-static.net/uploads/4410194/normal_6063bbc7c3ea0.pdfIn PDF document text
- https://vaxuzumop.weebly.com/uploads/1/3/4/8/134870956/4996171.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414172/normal_60492818c454b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4465003/normal_5fdde92c475e2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470211/normal_606e8401cdc7e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403121/normal_603b1afbbf575.pdfIn PDF document text
- https://jixujorasubuzu.weebly.com/uploads/1/3/4/5/134592613/nunaganis_zunotadokiwi_wozeware.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380209/normal_601c7d6e64c80.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471238/normal_601021231546b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481699/normal_60243cfee66e5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459341/normal_6045bb5938e15.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4371005/normal_5fc998fbd161a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4383146/normal_5fff38dc464d0.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/089efac5-cdf5-4823-bf01-134793dac1e4/jekyll_and_hyde_song_lyrics_jonathan_thulin.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e996c981-0413-469e-a77a-722ed6ee00d6/kevufisumenujiduboralew.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/38ceca61-031d-4e90-b691-33c1effa17f8/the_death_of_money_rickards.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/100ab189-d3fb-4c23-894c-0653e803572d/14688976921.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/619eb59c-944f-4585-bf77-04c4c83e394d/nibidizixajakepikusiwi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f4d890c6-9602-4016-8061-283dc8126d0a/how_do_i_connect_my_hp_officejet_4630_to_my_mac_wirelessly.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6d74ec60-936d-40c0-b56d-cfd089e11005/how_to_start_off_a_crochet_granny_square.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/11d57336-51d2-42f2-b7fb-8fb1ad0fd9e6/sugodi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/453b02ed-157e-4641-8eda-b4d3c198195d/popolawupavurikidu.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_off00019429.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19429	5600 bytes
SHA-256: `386b1c64344fe518698d8b8c6b6136625799e77c5a7a2b15f25ab0879cc906aa`
`font_01_sfnt_off0001a726.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1A726	12180 bytes
SHA-256: `73f8c519b296531eef86d0fbf6e6ff8207dbfb365cddd43a0ae600e4cb7e0004`
`font_02_sfnt_off0001d05b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1D05B	16132 bytes
SHA-256: `82f7aa4fef2cd90733ed84ef1d81c041b15990b82a49830089245cc24b586ea2`

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