Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04931a1c8599457…

MALICIOUS

PDF

87.1 KB Created: 2020-11-17 08:28:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 84ab8d03622844566f121a34d7b701aa SHA-1: dea4de1c22fb32c1dc4d2c6ad7cf7ce48002ae4a SHA-256: e04931a1c85994575fc24a4535abe15a4f46b5ad14666e243de2d3ee018475a9
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 0.9997

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://trafffi.ru/strik?utm_term=hocus+pocus+full+movie+free+stream PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393638/normal_5f9b2dd10a4c8.pdfIn PDF document text
    • https://kutowovazamil.weebly.com/uploads/1/3/4/3/134362820/pokixalomurugi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372707/normal_5f94d04daadf1.pdfIn PDF document text
    • https://danizodeker.weebly.com/uploads/1/3/4/5/134581754/dapasorasobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379359/normal_5f9123132f66d.pdfIn PDF document text
    • https://kugodago.weebly.com/uploads/1/3/4/4/134491336/916016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/18d7434d-6308-4b32-b7c0-20bd4dde860a/zelda_explorers_guide_worth_it.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7df234e-3848-4ce2-9bee-027038ad5fef/86487968820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/346fb01b-96c5-459f-925e-8e9840f92410/gift_card_generator_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d239016e-2d11-4783-8514-7a6e1ad3e937/gijulekise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8dcd767-3666-4815-b51c-e06808a40dca/fire_safety_merit_badge_powerpoint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e9abde6-a9b4-453b-8171-07df456d8533/definicion_de_medios_de_comunicacion_privados.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/galileo_galilei_brecht.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE00 4956 bytes
SHA-256: 08f87a49b5f9ed50fca82058ed97669b12c4088c9476dcbc5f03dd1bf3aab0ad
font_01_sfnt_off0000dedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDB 10972 bytes
SHA-256: 3dd735dcd0aefcd8e3be9d85c2ae5952a2a9ed058636052a622a49726480e1e2
font_02_sfnt_off0000fd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4B 11444 bytes
SHA-256: 7964667bf49f1c0bf9a79df69e34e03f0909356c6619f037bb2a3adaad169519
font_03_sfnt_off00012482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12482 18060 bytes
SHA-256: d6a858b35bb491c7136474149db1dec5d168513ff0efca7cad6d8a347dff88be
font_04_sfnt_off0001406e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1406E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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