Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab89d9a51f3f05e…

MALICIOUS

PDF

83.1 KB Created: 2021-04-29 03:40:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 75f36fb10f8443fc44973b9a5a67fc05 SHA-1: 61e05539d75b417d6cdbdc2facc93d2699b652ed SHA-256: 2ab89d9a51f3f05e8515c04ba85063111bdc753cda84c87c3d6971d0657ce1e5
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The primary URL, https://mezovuduw.ru/strik?utm_term=which+mudra+is+best+for+meditation, is likely used to redirect users to malicious content. No scripts were extracted, but the overall structure and URL distribution strongly suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/strik?utm_term=which+mudra+is+best+for+meditation PDF link annotation
    • https://sidunijutama.weebly.com/uploads/1/3/1/1/131163786/tepemusunovos.pdfIn PDF document text
    • https://tixuxajus.weebly.com/uploads/1/3/2/6/132682254/lemipewobalexe-degapokezaka-gejojuwanaroleg-domaxin.pdfIn PDF document text
    • https://sixuvowapunara.weebly.com/uploads/1/3/0/7/130738553/natam.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/laporan_pendahuluan_tentang_bblr.pdfIn PDF document text
    • http://dimopun.mywebcommunity.org/mercedes_benz_glc_price_list.pdfIn PDF document text
    • http://talemine.getenjoyment.net/saxotipimesuboxexizob.pdfIn PDF document text
    • https://fozivumi.weebly.com/uploads/1/3/4/7/134761275/aaff47df.pdfIn PDF document text
    • http://fafesixokegigi.getenjoyment.net/le_avventure_di_peter_pan_italiano.pdfIn PDF document text
    • https://lewonodi.weebly.com/uploads/1/3/4/3/134330754/3419301.pdfIn PDF document text
    • http://gajelifuluxapov.mywebcommunity.org/4429140176.pdfIn PDF document text
    • https://jokinurelebuvet.weebly.com/uploads/1/3/1/8/131856462/4c1f0a4a.pdfIn PDF document text
    • https://zesaxigupube.weebly.com/uploads/1/3/4/0/134016892/murekedul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://160e4e15-e27a-4ef2-9b26-f67fc0969a86.filesusr.com/ugd/cbdbb6_24d51376ee0644a5a67b4baa0ebcd7ce.pdf?index=trueIn PDF document text
    • http://reladefuxuna.onlinewebshop.net/leer_el_extranjero_albert_camus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c28401f1-65eb-4418-ba8c-4b29559a2386/papozedunefi.pdfIn PDF document text
    • https://22fea36a-5e19-4af1-b4aa-fe6e1efe0ee9.filesusr.com/ugd/b5a188_5c6b5ff45298478fbc226a6ba055050b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/426e2408-f89c-43b1-b1e3-17edcfd149d3/filup.pdfIn PDF document text
    • https://bf68d742-fb98-404a-ab47-1dcf24f7df52.filesusr.com/ugd/83e7fd_73be29a1c60d4eef87e0765f5a304bb5.pdf?index=trueIn PDF document text
    • http://ralirajuz.atwebpages.com/45908265800.pdfIn PDF document text
    • http://butorinowu.myartsonline.com/describe_the_different_types_of_heat_exchangers.pdfIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_0aeb1f3e6fbd4a548c3861ec4eda878f.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_off00010669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10669 5380 bytes
SHA-256: 41df3f4d3b4f35313fb1cc22b4217c42e0c72a66334f73fb60124226d23917c7
font_01_sfnt_off00011891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11891 10804 bytes
SHA-256: 62bf11bee3ec256d7e1808c339a95ef2a016af3c48d854553cbe8d064c6a9260