Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5be079739fe78b…

MALICIOUS

PDF

85.4 KB Created: 2021-02-26 04:49:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: e1562a1e506d71d1846c95e99d70d420 SHA-1: 915a19ca1ebda3b65528f467abab6a08aa938b86 SHA-256: 1e5be079739fe78b9dc27900452b12cfff19b8f1047ab583a814758ccd6b0f32
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The document contains a large number of embedded URLs, forming a link farm, and the ClamAV detection indicates it is a phishing trojan. The presence of a password-protected archive lure suggests an attempt to bypass gateway scanning by encrypting the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://crophysi.ru/award?keyword=el+conde+de+montecristo+pelicula+2002+mega In PDF document text
    • https://lijemokuw.weebly.com/uploads/1/3/4/8/134853622/ripuseworomu_sudas.pdfIn PDF document text
    • https://solugelefeko.weebly.com/uploads/1/3/0/7/130740562/vamowubisewigu-dokolup-modib-bumalerovurivuw.pdfIn PDF document text
    • http://jamotovoxut.mywebcommunity.org/13367669120.pdfIn PDF document text
    • https://pigukoziluluz.weebly.com/uploads/1/3/4/8/134896600/kuvilunexumake-pewinibeza.pdfIn PDF document text
    • https://xepesirivow.weebly.com/uploads/1/3/1/4/131408502/kebuzuxulotokepisi.pdfIn PDF document text
    • https://xegadoponuxi.weebly.com/uploads/1/3/0/7/130775279/dovotifivalum-bepob-jelajamalo-zigapovalunu.pdfIn PDF document text
    • https://nojabepeteguki.weebly.com/uploads/1/3/4/6/134669956/5009780.pdfIn PDF document text
    • https://fedonofawok.weebly.com/uploads/1/3/4/8/134881994/luzodabuxar.pdfIn PDF document text
    • https://jegobegopij.weebly.com/uploads/1/3/1/8/131871729/bulilepibupuzebike.pdfIn PDF document text
    • https://sujolatako.weebly.com/uploads/1/3/4/6/134624807/5519029.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/38220218243.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/arduino_software_free_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/xitubunetoxi.pdfIn PDF document text
    • http://golokelu.rf.gd/cadena_de_valor_que_es.pdfIn PDF document text
    • http://xenuduximowub.epizy.com/33022511054.pdfIn PDF document text
    • http://mojofukiw.epizy.com/47144070553.pdfIn PDF document text
    • http://fitudaled.rf.gd/what_type_of_oil_for_husqvarna_push_lawn_mower.pdfIn PDF document text
    • http://xunonevikonog.rf.gd/children_s_video_songs_in_tamil.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/24700392963.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/vimew.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://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_off0000e63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63D 4720 bytes
SHA-256: db6a5e0aaa2467543ab5098a2df087cbdd9ddad84fb35ab77142111c9a64a650
font_01_sfnt_off0000f6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A9 5624 bytes
SHA-256: 141681ea71a84417b8f9ef0a5a8b3bfcdea8fd944661f29d9579c419c334f712
font_02_sfnt_off000109b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B3 11820 bytes
SHA-256: a976a31b76aa6f8c9befee407efac081763d4a65d286cb52f1a7b6846261ad0a
font_03_sfnt_off00013039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13039 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15