Malicious PDF — malware analysis report

Static analysis result for SHA-256 7489684c33fa3d25…

MALICIOUS

PDF

92.5 KB Created: 2021-03-24 14:42:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9fc0cf4c48fd60f739a4b2cf81b67ef4 SHA-1: 1f231d9f01eee157ecfb84acad5db38573b2a8cd SHA-256: 7489684c33fa3d25472c1f389b731a218544bdb3e557efa914789020fbb448bd
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a significant number of external links, suggesting a link farm or redirection mechanism to malicious sites. The presence of embedded URLs and the overall structure point towards an attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://nipisod.ru/strik?utm_term=timex+t78582+vs+t78587 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387060/normal_600b60f0bbb55.pdfIn PDF document text
    • https://lopiranurepo.weebly.com/uploads/1/3/4/7/134735856/labopesatete_ponote_rilevozikilabe_gikudodi.pdfIn PDF document text
    • https://xutafutixon.weebly.com/uploads/1/3/4/5/134576274/e2d9406c163cf.pdfIn PDF document text
    • http://gapewikegolunop.iblogger.org/fekarepanubovivowavelar.pdfIn PDF document text
    • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/59b704f.pdfIn PDF document text
    • https://mifopubulu.weebly.com/uploads/1/3/1/6/131637027/vavefa.pdfIn PDF document text
    • https://nimaxosonoj.weebly.com/uploads/1/3/4/8/134897368/tudidam.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/1c0f0b86172886.pdfIn PDF document text
    • https://sipinawuzukefo.weebly.com/uploads/1/3/1/4/131410227/vapizukivetotuba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413696/normal_5fdadbf760684.pdfIn PDF document text
    • http://xajozixav.iblogger.org/cobra_walkie_talkie_cxt145_reviews.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404503/normal_5ff6909f840ed.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
    • https://s3.amazonaws.com/kelageketisefuv/meronozilepuzixeneke.pdfIn PDF document text
    • http://zejenideve.rf.gd/38304284542.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/87649094673.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/how_to_reset_samsung_tab_4_without_password.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc86090c-53f5-4a8b-bd2c-b5e3056b7646/79291487762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb56988f-3e46-4f1e-b77b-eaac6d1b32e8/how_to_setup_netgear_8_port_switch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cc0c997-9d7a-4c39-957c-5a867b3400da/beretta_a300_outlander_wood.pdfIn PDF document text
    • http://kololujes.rf.gd/ethics_integrity_and_aptitude_book_in_hindi_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/62941323479.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/lodekofigogadapavob.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6D 5100 bytes
SHA-256: 56cc54476f14e3afc7b9e2671c512886c68cd32535171f8d840b3c094c2d4f63
font_01_sfnt_off00010fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD0 7772 bytes
SHA-256: 7146b5430a7fb75183e8cf8c28d6e529e37131fa1361bdb8d43e989631474383
font_02_sfnt_off00012548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12548 11636 bytes
SHA-256: 26478fdf5d32e8669f77f2a3c7399ef5e3a5520725a14a4b0ec8c56ef116ed33
font_03_sfnt_off00014d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D27 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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