Malicious PDF — malware analysis report

Static analysis result for SHA-256 64bb5e1a39236c04…

MALICIOUS

PDF

69.6 KB Created: 2021-04-06 23:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 61fc5a0ece9961c99cf704f6e2e9e3cc SHA-1: 5b272eca9166f9d5f396f54d5a4929ca1589f41c SHA-256: 64bb5e1a39236c0422a1904184f85e4905d91edf001ad8e4727538ae4dd1dded
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with one prominent URL pointing to 'maypoin.ru' disguised as a guide for setting up a DirecTV remote. This suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious lure.

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 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://maypoin.ru/strik?utm_term=how+to+set+up+new+directv+remote+to+receiver PDF link annotation
    • http://gagejunifux.22web.org/niwekinasibidu.pdfIn PDF document text
    • http://naturebiolog.space/traxxas_summit_1_10_upgradesfxg23.pdfIn PDF document text
    • http://sandwichhq.club/249167745072rtsg.pdfIn PDF document text
    • http://about-central.com/wemo_maker_factory_resetym4nh.pdfIn PDF document text
    • http://waliwosodumobu.iblogger.org/haseltine_primary_school_ofsted_report.pdfIn PDF document text
    • http://tevalevas.22web.org/tejimavapa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuwikomoxiso.epizy.com/39838488877.pdfIn PDF document text
    • http://rizalinupegaroz.epizy.com/asme_b16_34_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ccbbf59-391f-48cb-a411-11c5a487dc01/which_is_cheaper_to_run_a_fan_heater_or_oil_filled_radiator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bfc83ef-8907-4a84-92ad-bad2bb94ef26/my_ge_refrigerator_water_dispenser_stopped_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/108ba38b-d02b-4643-a9b3-02663953a6d6/1932949647.pdfIn PDF document text
    • http://xabawudoxiviwe.epizy.com/6272177609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94c40fbd-61f1-44dd-b875-e607fd8da4eb/41306770466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b580d4d-a6a3-4234-8a32-6ca9fe7515f9/conda_pygame_python_3.6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5910e6d3-5642-4417-b68a-ba94f4a8a664/vikexapujofenese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d275b14-caf8-401e-91cf-38e1d07f29a3/vowumeradutukawepopivuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e9134ab-9a28-4364-9aeb-9b4dfa49cab3/shure_ulxd_antenna_power_fault.pdfIn PDF document text
    • http://pisibagavorinow.epizy.com/xelilopibujagekug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d61e4e03-0ac0-4f5c-8503-9d2cedc28d45/windows_server_2012_r2_unleashed_by_sams.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23C 5092 bytes
SHA-256: 3af03debf96e8990683adee228edb4f418c294e7c4a7de4d64016be1702733b1
font_01_sfnt_off0000e392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE392 10416 bytes
SHA-256: 03dee63b007dd33f06af3e75a741aa2612bb233922a384daf078eecf657ef276

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