PDF malware analysis — malicious · aeaba1b3e8827ef3

MALICIOUS

PDF

86.1 KB Created: 2021-05-29 20:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 7b902e1d3fa6e059abdee08fae85a6dd SHA-1: ed154075aa743a7a6f65251c9946920d9a4cebb1 SHA-256: aeaba1b3e8827ef3911790085acebebc39396e0b9ddf5d68313eabd034e35363

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a common tactic for SEO poisoning or redirecting users to malicious sites. The primary URL, 'https://nipisod.ru/123?utm_term=seventh+day+adventist+church+fundamental+beliefs+pdf', suggests a lure to attract users searching for specific religious beliefs, likely to a phishing or malware distribution page. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/123?utm_term=seventh+day+adventist+church+fundamental+beliefs+pdf PDF link annotation
- https://xelinibi.weebly.com/uploads/1/3/0/7/130739371/28575461.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447433/normal_6001d627a6b16.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425501/normal_6059107d99d28.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4498978/normal_601e14de9381c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368493/normal_603e40be8729f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494875/normal_602d476e6f042.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425916/normal_6029205fdb9ff.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480876/normal_6054e57a1bb7e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490950/normal_60130b5b33f41.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4389106/normal_5ff3d097ae159.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366313/normal_5ff04776797ab.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4427295/normal_6000fdde651ba.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4479905/normal_5fca9bb9877de.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481065/normal_600712f926cb9.pdfIn PDF document text
- https://zisupozukubowad.weebly.com/uploads/1/3/4/6/134678668/4630823.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416125/normal_5fd39346e2cbd.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/d0d0dfcd-ba1c-40cc-862a-f49e13d7b14b/what_foods_contain_gluten_list.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3ae0a90b-48bb-4ab2-89cd-adde3f7142cf/37015185976.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_off0000faa0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFAA0	5800 bytes
SHA-256: `40ab269dd3b17293ffb7dc10226655e54f0bf6a73349f01b05bc0daee9ab74f4`
`font_01_sfnt_off00010e43.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E43	11416 bytes
SHA-256: `099567f3bd2547f5a12e88ae878af438b988166c42a6e6d2ebd13a19488892da`
`font_02_sfnt_off0001352e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1352E	16204 bytes
SHA-256: `532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e`

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