Malicious PDF — malware analysis report

Static analysis result for SHA-256 29bf99f22684a3a9…

MALICIOUS

PDF

73.8 KB Created: 2021-03-31 17:04:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 7b9d01d42429c69a864c64d718555f71 SHA-1: 1103579493ca0fd772a64c343f7247571eac54ed SHA-256: 29bf99f22684a3a90dc63b15665a03ab20b9764aeae4481bcf0edff46747a1ae
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing further malware. No scripts were extracted, but the primary function appears to be directing users to potentially malicious external content.

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://jottigo.ru/wix?keyword=parcc+accessibility+features+and+accommodations+manual+2017 PDF link annotation
    • http://sijiwepi.mypressonline.com/finirowowudowisadudiruvi.pdfIn PDF document text
    • http://zowogusatutojus.mywebcommunity.org/jenugekibemidugokexazari.pdfIn PDF document text
    • http://wokodanib.getenjoyment.net/free_printable_christmas_wrapping_paper.pdfIn PDF document text
    • http://jokegave.mywebcommunity.org/59321008630.pdfIn PDF document text
    • http://rewuvov.iblogger.org/pajimawapozuwaxovu.pdfIn PDF document text
    • http://nukapag.getenjoyment.net/dejesazejoradebu.pdfIn PDF document text
    • http://dekiweragaf.mywebcommunity.org/summertime_ukulele_tabs.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/rekubezewafejevuxifaf.pdfIn PDF document text
    • http://lipexifinidoda.scienceontheweb.net/what_can_i_do_with_a_degree_in_public_relations.pdfIn PDF document text
    • http://bamasadukarudam.iblogger.org/7628818416.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://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_644cec1815cc4c00bc68e261c753a5f2.pdf?index=trueIn PDF document text
    • https://d321836a-1bf8-47c4-b4d3-67fe1e7f0250.filesusr.com/ugd/33ab24_74148e709f3d4f508aa988bb44bc91bd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fe21fcf-f9c5-40cd-a802-fb4149ac51e0/44942770197.pdfIn PDF document text
    • https://6754c94d-8795-460a-880d-d127bb37d4d4.filesusr.com/ugd/2383dc_2a10bf1047c04738875a9316770c02cd.pdf?index=trueIn PDF document text
    • https://dedb376b-efc3-4528-ac10-fc65d12f866c.filesusr.com/ugd/5f6074_ed887a44d8c04fe18b5b4a66949ec187.pdf?index=trueIn PDF document text
    • https://4e4608fd-868e-43f5-b6ba-14e5e4b50785.filesusr.com/ugd/b1f235_caac619d5fbb48f09e5a2cbec7ec6ea1.pdf?index=trueIn PDF document text
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_7fc0ead305634e1b8dd9515061769662.pdf?index=trueIn PDF document text
    • http://pezefaxovojole.atwebpages.com/tereli.pdfIn PDF document text
    • https://30b7a97f-6117-4fff-8876-4b3c2220b6c6.filesusr.com/ugd/15cd4d_b37f943df59445e98deb4c18de4117c4.pdf?index=trueIn PDF document text
    • https://acaa17bf-cf2e-4132-a9e9-810271eb8bc4.filesusr.com/ugd/ab5b4c_ca6850bdf6754a95ab1154cc9cd72ccc.pdf?index=trueIn PDF document text
    • http://misovin.epizy.com/multiplicative_comparison_word_problems_4th_grade_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c830b8ee-d0c9-4429-a221-91613e02f526/11349992006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89e0bd6c-b536-4ec6-b347-6e0e78453774/34803865420.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_off0000d55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55B 5696 bytes
SHA-256: cf96ba0d841d628d129e9c73bad35a640e9d773c175402ea65f18c2f86d4868e
font_01_sfnt_off0000e8ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8AD 10116 bytes
SHA-256: 97d03396be47f0906689d20114c45398a4033577905a986a260cb2021ffa1527
font_02_sfnt_off00010b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B46 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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