Malicious PDF — malware analysis report

Static analysis result for SHA-256 233585c7db47123d…

MALICIOUS

PDF

80.6 KB Created: 2021-02-16 19:50:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 324c2fe596a14a2c2bfb45dd29188bf5 SHA-1: a5b0173f64ef64680a9dfed5a4a902e33b4c968a SHA-256: 233585c7db47123d401dae701b35294aacbced211689434055a136d05464fb44
184 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, specifically as a phishing or redirector. It contains numerous embedded URLs, with at least one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains keywords related to search terms, suggesting a lure to external malicious sites.

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
  • 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 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.
  • 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/123?utm_term=nordictrack+cx+925+parts In PDF document text
    • https://mifurujuxix.weebly.com/uploads/1/3/3/9/133997148/bosazasolubakop_furigaxorez_wijewenil_loxanubuf.pdfIn PDF document text
    • https://xajomorunineg.weebly.com/uploads/1/3/1/3/131383441/wavozudapiva-lamej.pdfIn PDF document text
    • http://malapiwo.66ghz.com/mapa_america_politico.pdfIn PDF document text
    • https://susudomi.weebly.com/uploads/1/3/5/3/135319884/1017361.pdfIn PDF document text
    • http://tezatigobupuvu.22web.org/sol_b._com_syllabus_2017.pdfIn PDF document text
    • http://dowelatevitik.22web.org/diy_bumblebee_transformers_halloween_costume.pdfIn PDF document text
    • https://kajubogoxin.weebly.com/uploads/1/3/0/9/130969430/db1a5f02c17edab.pdfIn PDF document text
    • https://bepopasexib.weebly.com/uploads/1/3/4/3/134356469/ad9f3c69152fe.pdfIn PDF document text
    • https://regasefes.weebly.com/uploads/1/3/1/8/131871592/4fa62b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fumaresaxebikab.epizy.com/soliburetalijilijanu.pdfIn PDF document text
    • http://dunobumuvoz.epizy.com/kulanugifepogigalunug.pdfIn PDF document text
    • http://fujaled.epizy.com/beckhoff_plc_hardware_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/11025841741.pdfIn PDF document text
    • http://wipapirub.epizy.com/42759933802.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/arkansas_river_fishing_report_canon_city.pdfIn PDF document text
    • http://fufabufitilaf.epizy.com/fevitejivugubane.pdfIn PDF document text
    • http://kixozixid.rf.gd/595003112.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/zajozesajetosa.pdfIn PDF document text
    • http://bezuxij.rf.gd/john_deere_mower_tire_tubes.pdfIn PDF document text
    • http://kalavelixafuro.epizy.com/nomowukolesujegire.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EE 5548 bytes
SHA-256: 98978d54e8f28348c19118cc5014311752b21529d1a286c59b14f0b4a46e05f7
font_01_sfnt_off000105e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E8 16572 bytes
SHA-256: 7ef5a8b6ebef77717c636a0940167258b6d2ecdc5e30238dd96ab3da774a5d62

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