Malicious PDF — malware analysis report

Static analysis result for SHA-256 e79807cd9c189b32…

MALICIOUS

PDF

74.5 KB Created: 2021-02-24 14:37:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 1fda3b410b9e2147cfdcc958a1a3797c SHA-1: 5210905cb77806712df9e555984cd7923332ab76 SHA-256: e79807cd9c189b3217e6fb14565d1ce8f59dba065ad283b4d8815a024edeec8d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'firem'n chit requirements'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=firem%2527n+chit+requirements PDF link annotation
    • https://xikoroto.weebly.com/uploads/1/3/4/3/134338579/gugigejanoga-wizitinutokedok-wirorom-kabarizib.pdfIn PDF document text
    • http://sunny-web.ru/is_functional_training_good_for_weight_losswub5t.pdfIn PDF document text
    • http://dalkomis.website/driver_impresora_hp_psc_2175_all-in-onem0f52.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/viejPqp/vefagud.pdfIn PDF document text
    • https://cdn.sqhk.co/dedesonor/u8ha4ia/toon_blast_cheats_2380.pdfIn PDF document text
    • https://cdn.sqhk.co/mamevugixej/ighhLgf/74657294764.pdfIn PDF document text
    • http://clobuss.ru/sopewesofadokurw0iyc.pdfIn PDF document text
    • http://arnautmebel.ru/lowizvcaek.pdfIn PDF document text
    • https://wavenugila.weebly.com/uploads/1/3/4/8/134852162/givinubof.pdfIn PDF document text
    • https://cdn.sqhk.co/menaleratupo/Gfiaicj/dictionary_in_spanish_only.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://giduzorim.epizy.com/gibogiguwipidapej.pdfIn PDF document text
    • http://muwalolerede.epizy.com/25471714759.pdfIn PDF document text
    • http://wometopususap.rf.gd/abecedario_letras_goticas.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/what_size_tires_fit_2007_jeep_grand_cherokee.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/undergraduate_student_cv_template_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/vesicle_structure_formation.pdfIn PDF document text
    • http://tenasupufowok.epizy.com/51857061985.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/antonym_and_synonym_worksheet_ks2.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD916 4684 bytes
SHA-256: 25f7a9996725f5ab6b34da1f8c7b24c32619a92c77c91f56f51115fb90aae794
font_01_sfnt_off0000e8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D6 11436 bytes
SHA-256: 3da2f516a7fcc24b4b11f0a21ab54dbdd87c421e17d1982a7e43451355f64de8
font_02_sfnt_off00010f05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F05 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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