Malicious PDF — malware analysis report

Static analysis result for SHA-256 3430921b5eb07416…

MALICIOUS

PDF

71.1 KB Created: 2021-03-06 17:42:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: c4f14a184959023cc375ecb929e36213 SHA-1: d052469da74ac8481933fc79ca9bcec6897c531b SHA-256: 3430921b5eb074168d1cecf1df294ff205226b4205275e04caa5544568d2af38
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to malicious content, likely for credential harvesting or further malware delivery.

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
  • 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://botokaw.ru/strik?utm_term=directv+genie+remote+control+replacement PDF link annotation
    • https://jefupijoban.weebly.com/uploads/1/3/1/4/131437873/dezurinofor_bexalokojoka_kubamivi_lazefubur.pdfIn PDF document text
    • http://jozipuvuwuzaj.mywebcommunity.org/how_to_plant_green_onions_without_soil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473030/normal_600e7ec11da38.pdfIn PDF document text
    • https://gerukule.weebly.com/uploads/1/3/1/6/131606739/2968987.pdfIn PDF document text
    • https://luwanolukurodo.weebly.com/uploads/1/3/5/3/135397368/7159c569.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/is_harry_potter_on_netflix_germany.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/fedawofutapigugori.pdfIn PDF document text
    • http://vadusulu.iblogger.org/donald_duck_meme_template.pdfIn PDF document text
    • https://gupexududoteg.weebly.com/uploads/1/3/5/3/135302954/6dc4dc90aa1bf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485826/normal_6030cfcf1cbcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379968/normal_603a0be95d483.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poxizaxo.epizy.com/major_delinquency_credit_report.pdfIn PDF document text
    • http://mepitar.atwebpages.com/saeco_incanto_sirius_coffee_machine.pdfIn PDF document text
    • http://tiruweditivunaw.myartsonline.com/what_p90x_schedule_should_i_do.pdfIn PDF document text
    • https://968bac2e-1409-45a7-bd11-2c37eba47390.filesusr.com/ugd/c81504_1335b9994c6d45b6ab9851be28b0e97d.pdf?index=trueIn PDF document text
    • http://japinoxizidunub.myartsonline.com/pogirinu.pdfIn PDF document text
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_25e9ff14340d42b3959c6a0d573d72db.pdf?index=trueIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/god_is_able_chords_planetshakers.pdfIn PDF document text
    • http://nenimon.epizy.com/48474586439.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF4 5136 bytes
SHA-256: ec6dfce7ec466f25d2ef03dc39d05468b060f3d3c8f1c81fffcdf1a4ba263f42
font_01_sfnt_off0000e064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE064 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off0000ebc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC7 10292 bytes
SHA-256: d5716e6be79f448b5ef2d8eae86bc3f8e4c8a0a3cc36ebc85ee070567bda2a85