Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69cc41676181baa…

MALICIOUS

PDF

81.8 KB Created: 2021-03-17 21:30:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 9990a952a52a9cbc0fc195f6a05f17a2 SHA-1: 9990220b384c1d336da518dbadb11d84df78a7fe SHA-256: a69cc41676181baa3a440912d7cba0eb8911b1493958379adc33393a542edec5
224 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier, indicating a high likelihood of malicious intent. It contains numerous embedded links, many pointing to disposable hosting and redirector infrastructure, suggesting a phishing or malware distribution campaign. The presence of 'LOLBin token sequence in document text' further supports the malicious nature, possibly indicating attempts to disguise malicious commands or URLs within the document's structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.
  • 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://crophysi.ru/wix?keyword=how+to+increase+altar+power+witchery+mod In PDF document text
    • http://lg-supportteam.com/ncert_maths_book_class_10_chapter_4_solutionshy63a.pdfIn PDF document text
    • https://degusatujetuz.weebly.com/uploads/1/3/0/8/130813325/d240fa0131.pdfIn PDF document text
    • https://lesesagipamagaz.weebly.com/uploads/1/3/0/7/130739561/ninuwegewutimemesi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425229/normal_5ff652a271967.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365570/normal_5fc6d8ad1d315.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387052/normal_6023dc66c719c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421335/normal_5fcf135f407d1.pdfIn PDF document text
    • https://rovorakule.weebly.com/uploads/1/3/4/7/134774255/a94f4c.pdfIn PDF document text
    • http://wersita.space/pikimegulajapagesofk95ju.pdfIn PDF document text
    • http://es50off.pro/40114817740pbnhd.pdfIn PDF document text
    • http://ryukzak.digital/how_to_speed_up_your_computer_using_cmd7ief2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424341/normal_604bc832bc8bc.pdfIn PDF document text
    • https://titoboxe.weebly.com/uploads/1/3/0/8/130874676/fasunavo.pdfIn macro / runtime command snippet
    • https://cdn-cms.f-static.net/uploads/4419623/normal_604e1ec66a685.pdfIn macro / runtime command snippet
    • https://cdn-cms.f-static.net/uploads/4372972/normal_604058f21563d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368952/normal_5fe18e7c6375d.pdfIn PDF document text
    • https://sikenobavusemel.weebly.com/uploads/1/3/2/6/132682861/1379254.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478415/normal_5fdba3d7107e4.pdfIn PDF document text
    • https://wonakusoxenim.weebly.com/uploads/1/3/5/3/135340368/1846002.pdfIn PDF document text
    • https://pufoxedoj.weebly.com/uploads/1/3/4/4/134438994/nijefemeroza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424341/noIn macro / runtime command snippet
    • 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://s3.amazonaws.com/jozaponi/6884641660.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/greatest_salesman_in_the_world_scroll_8.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/10253528335.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/kojegilurikagosuno.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/33175611363.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_off0000f1fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FB 5256 bytes
SHA-256: 0e9baff69d849d55001ce506bfb34801f061232e30f7d933205ec9054d45926e
font_01_sfnt_off000103b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B2 11576 bytes
SHA-256: a79ab5f951d3d36ccf19d9d522c05acd5c2b7185454a47690a353c8b23f69eb5
font_02_sfnt_off00012acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34