Malicious PDF — malware analysis report

Static analysis result for SHA-256 79a7c15c31ced2e9…

MALICIOUS

PDF

76.7 KB Created: 2021-03-24 11:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 98a469da2f6844f901447383c5c045a2 SHA-1: 3ac19f7895194b652d984db690fc73f68b84413c SHA-256: 79a7c15c31ced2e971ce1383a88f8aa281df6fe9adc5cd84a58f7061de030763
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, with a primary suspicious URL being 'https://soxebez.ru/wb?keyword=fisher%20price%20cradle%20n%20swing%20my%20little%20lamb'. The document body, though heavily obfuscated, suggests a lure related to product listings, consistent with phishing tactics. No scripts were extracted, but the PDF structure and embedded URIs point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wb?keyword=fisher%20price%20cradle%20n%20swing%20my%20little%20lamb PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4499958/normal_5fffcc7807e46.pdfIn PDF document text
    • http://inter-kalinka.ru/gamelin_complex_analysisqoj1v.pdfIn PDF document text
    • http://winoraama.site/5_examples_of_alliteration_in_beowulfwnfe6.pdfIn PDF document text
    • http://vk-settings-change.online/26280213726hb5a7.pdfIn PDF document text
    • http://50offshop.info/81823417941mlp7k.pdfIn PDF document text
    • https://kovorugoza.weebly.com/uploads/1/3/1/3/131383314/5077826.pdfIn PDF document text
    • https://towotadop.weebly.com/uploads/1/3/2/6/132682697/muzokakozumexiduzibi.pdfIn PDF document text
    • https://kobejepofefes.weebly.com/uploads/1/3/5/3/135317692/jugeduniximu.pdfIn PDF document text
    • https://labajamipudoxa.weebly.com/uploads/1/3/5/3/135399896/momeped.pdfIn PDF document text
    • http://pogadai.xyz/zeniwizi88zl2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425238/normal_5fe59a4903312.pdfIn PDF document text
    • http://pubgucbayim.com/3255589462p5bwz.pdfIn PDF document text
    • https://bikafosujikus.weebly.com/uploads/1/3/2/8/132815014/daaab67f51fa1.pdfIn PDF document text
    • http://datingsexchat.site/vexebukaxedinupebobgx1ku.pdfIn PDF document text
    • http://steblin.pro/bebomogubilowikapidemzugtk.pdfIn PDF document text
    • https://tedagenuv.weebly.com/uploads/1/3/2/6/132682668/topadezukanoxu.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://uploads.strikinglycdn.com/files/4f3f8791-b868-4476-8d07-91b5826a89e9/epson_artisan_710_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/533ee6da-6afd-4bd2-b7ce-c607801f3945/wewileviwofatezun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d38131c7-254c-4116-b3e2-25c50354a8e6/char_broil_turkey_fryer_cover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/667563c6-0eac-405c-ab36-e8d50914d84d/what_is_fourth_wave_feminism_fighting_for.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE53 5456 bytes
SHA-256: 341e4dd1d7ff73716e034ab28b52d864ef4a1ef38d765f5e13a6275bd78b22d3
font_01_sfnt_off0000f0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BD 11100 bytes
SHA-256: b9359eaa785e326fe2dbfdc5901e124e492106bfb8c054f83d86725f810f1f20
font_02_sfnt_off000116c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116C2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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