Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f110a48bad32e6f…

MALICIOUS

PDF

76.4 KB Created: 2021-03-16 04:40:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 61ef8b51c4cf3e037e7ec433a68dacf3 SHA-1: 5789056dbd8a21f420bec63c0f636064ad8eacde SHA-256: 1f110a48bad32e6f55bdf15cadbafc356f6ffb37a912a1987c262ee12069ca62
156 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. 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-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.
  • 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://lozipotod.ru/strik?utm_term=definition+of+international+business+environment+by+different+authors PDF link annotation
    • http://spiritstudio.ru/aghori_mantra_book6xupd.pdfIn PDF document text
    • http://notdull-eng.online/how_long_does_a_texture_softener_lastfnb96.pdfIn PDF document text
    • https://vusukiziroge.weebly.com/uploads/1/3/0/9/130969505/zilij.pdfIn PDF document text
    • http://creditactive.info/10047322002iuss2.pdfIn PDF document text
    • http://magicwoolshop.com/nike_case_study_analysisd8pol.pdfIn PDF document text
    • http://nesobaka3.xyz/hp_elitebook_folio_9480m_user_guidef3z41.pdfIn PDF document text
    • http://hallop.xyz/jikafiminomugycpus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450257/normal_6003655cd1859.pdfIn PDF document text
    • https://dodilepu.weebly.com/uploads/1/3/4/4/134444379/jigaku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446923/normal_603bbdeceb437.pdfIn PDF document text
    • https://torovuzexas.weebly.com/uploads/1/3/2/7/132710592/2313626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://52a1af19-6946-4c37-aba6-ab00a30e4874.filesusr.com/ugd/5dc3ca_51294d8379134ca9a5a24dc8de129a55.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/bme280_datasheet_bosch.pdfIn PDF document text
    • https://b81e1767-bb0d-4562-9f98-cfef66859bb1.filesusr.com/ugd/b48b60_4bb27916f6f64cc4a6eedde67e70de24.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/67874571612.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/pidopujefibolu.pdfIn PDF document text
    • https://a82c121c-2200-4cd7-aff6-47cf910fdadb.filesusr.com/ugd/117c17_66e1ce9bf6564ef292b4773ec8298a4c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bubeto/list_of_regular_and_irregular_verbs_in_english_and_spanish.pdfIn PDF document text
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_47f9775b73fc43b19e106c822f98f376.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_off0000ece3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE3 5448 bytes
SHA-256: 6d8693a19a8af0650e275c9c68fbaf37cdd8b96970b63b0348190b0768239c73
font_01_sfnt_off0000ff4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4E 10652 bytes
SHA-256: 3e497a8ee378f754af5da2ae9fbac37fcd027fcf692752a63c6744a887f7c49a

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