Malicious PDF — malware analysis report

Static analysis result for SHA-256 30631ad3ef927992…

MALICIOUS

PDF

77.7 KB Created: 2021-03-15 18:18:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: fe6740cab428a019f6a44e3440c2acc2 SHA-1: 9c76008c74755703f81d2f9caf394856b34b1557 SHA-256: 30631ad3ef927992889f5d32b8716a8c5f06d0796361bf5cb0aa2b80e7937d5c
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It contains a large number of external links, suggesting it functions as a link farm designed to redirect users to potentially malicious websites. The primary malicious URL identified is https://pelibifir.ru/award?keyword=carprofeno+en+perros+pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • 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://pelibifir.ru/award?keyword=carprofeno+en+perros+pdf PDF link annotation
    • http://polizoriv.iblogger.org/keith_urban-youll_think_of_me_lyrics_karaoke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379987/normal_5ffa93152d5a7.pdfIn PDF document text
    • https://cdn.sqhk.co/tixukiko/0WihicK/pac-_man_world_2_gba.pdfIn PDF document text
    • http://gewarum.66ghz.com/word_graph_paper_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_601756e37fbb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496404/normal_604d27a06586e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427094/normal_6044130bc994f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380536/normal_5fd7bfe7efd08.pdfIn PDF document text
    • https://cdn.sqhk.co/vovusupa/YdRFROS/radiant_cut_diamond_engagement_rings.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/jjaiigj/creative_destruction_play_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500878/normal_5ffbe80126359.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461777/normal_5fcbbb48a3028.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_5fd0a9625b80e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://74a5c9af-61bb-4d76-9351-4d02c0bf652a.filesusr.com/ugd/e33828_c797edb2d4e4407882da5716bcd71672.pdf?index=trueIn PDF document text
    • https://cceb078e-1df6-42b0-9e12-359f30e42f1d.filesusr.com/ugd/e8506d_c106663ae998478ba79d50a2d9f44607.pdf?index=trueIn PDF document text
    • https://a0d2adcf-75bd-42a9-a42a-c23e1c6e9e1a.filesusr.com/ugd/85c99c_afe3f529679e49ff9fd9d488606e56ef.pdf?index=trueIn PDF document text
    • https://983c8978-ad56-435f-a988-47358aa6040c.filesusr.com/ugd/06a663_60d757752351494ebe6be8fa3727a31b.pdf?index=trueIn PDF document text
    • http://jevoneloz.epizy.com/nanesel.pdfIn PDF document text
    • http://viwefar.rf.gd/venigovofa.pdfIn PDF document text
    • http://remokulepene.rf.gd/48041312362.pdfIn PDF document text
    • https://86a9da1b-0b57-4b35-a77a-523886b904cd.filesusr.com/ugd/0d9a50_8ca8a1846b9e40fc99878a26edb10c9e.pdf?index=trueIn PDF document text
    • https://6205d428-d5dc-494e-bbc3-e2236f9d811e.filesusr.com/ugd/6885a6_62c90debaee0456787614c81b1cedb79.pdf?index=trueIn PDF document text
    • https://f13dd0f9-fe0a-4257-a88d-d9af1a1cf0e3.filesusr.com/ugd/d954c5_e46f4e714bc5463289fac6bf9ddd4fff.pdf?index=trueIn PDF document text
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_a715475858904cc6a3e1ed4d818952aa.pdf?index=trueIn PDF document text
    • https://e85625e8-91d5-48c2-95a4-67b7b95d5b39.filesusr.com/ugd/b97a97_955fbd54c59945aeba6ff27dcc6b8ef1.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14B 4908 bytes
SHA-256: 4722f3f2b09a02b2f86bc326d0f16c8860c184a7b3ff2f6d8d30cfcfe0934a40
font_01_sfnt_off00010204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10204 12176 bytes
SHA-256: 8b2347721c0549310316b85e0cfaebacd1031ed3561626644766779f25ffaa33

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