Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad54877fdd81ff4d…

MALICIOUS

PDF

82.1 KB Created: 2021-03-22 22:50:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 26454f4cd47a451198ad8c2f6ac1c92c SHA-1: 710209e1a4901aaedad9b9cac1314532d4c1a14f SHA-256: ad54877fdd81ff4de9a6a668b8a8748f4ac6acc3f6b92a0692f8c641c8ccb901
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=gta+vice+city+mod+apk+download+2020 In PDF document text
    • http://danixoxixofizi.iblogger.org/seascape_with_sharks_and_dancer_monologue.pdfIn PDF document text
    • http://wazepewazivulil.mywebcommunity.org/52941549556.pdfIn PDF document text
    • http://gobalesevusob.iblogger.org/zorotugepudila.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489583/normal_5ff5498e7bf2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383321/normal_5ff22bd15b3ea.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/wicca_a_guide_for_the_solitary_practitioner.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/57773748380.pdfIn PDF document text
    • http://dopuviboxew.rf.gd/47980276149.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/maluru.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/4474271661.pdfIn PDF document text
    • http://puxejinasor.epizy.com/27774122941.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/43653926106.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/finding_percentages_from_fractions_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/business_lease_agreement_template_doc.pdfIn PDF document text
    • https://3c4962d9-41f7-4f14-8396-dad57cc8de20.filesusr.com/ugd/a2de88_bea109830ae24e7f9d607701c873fc3c.pdf?index=trueIn PDF document text
    • http://gemebewi.rf.gd/piano_adventures_level_2a_set.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/form_button_outside_form.pdfIn PDF document text
    • https://abee6ad4-cf47-459a-954e-22b9b9bb30ad.filesusr.com/ugd/4bdc6d_63c9ae6c361048c39847a121d03c955f.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA25 5568 bytes
SHA-256: 697691ea4250d2efec549d3024aabaa2973de90eb78990918c645ef65bd6b1ee
font_01_sfnt_off0000fd32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD32 11936 bytes
SHA-256: f1e99c8c25593b13ab05a00f1acabf023f40f10c4a7a35e138a1a93196d2d412
font_02_sfnt_off0001246d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1246D 16136 bytes
SHA-256: ee515eb3ccd4ecac1ba79694f3b34b684523269c8294243682546e4d0ab48037

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