Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d68af135b4ffe18…

MALICIOUS

PDF

62.5 KB Created: 2021-02-07 03:04:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 773226233ff5818700d1ac5ea428b37e SHA-1: 52142273bec8c325980b639fbe6ccfe33a9d4d41 SHA-256: 1d68af135b4ffe18333fcbcda4abdc1892f1e46a3ca12c72567541f1841b3b0c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://jottigo.ru/aws?utm_term=hibiscus+petroleum+berhad+annual+report+2019 PDF link annotation
    • https://jilarikogezinuv.weebly.com/uploads/1/3/0/9/130969280/nelaravoxunofi.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/hchfevH/60785945414.pdfIn PDF document text
    • https://kivinogafuwej.weebly.com/uploads/1/3/4/7/134702495/e25b19cc1f7e972.pdfIn PDF document text
    • http://figojusu.iblogger.org/21282913775.pdfIn PDF document text
    • https://ziwagunu.weebly.com/uploads/1/3/4/8/134883986/zeruvogowipeji-zexisis-pewubam-vabugem.pdfIn PDF document text
    • https://bezatawe.weebly.com/uploads/1/3/0/9/130968967/6719977.pdfIn PDF document text
    • https://kakituku.weebly.com/uploads/1/3/4/5/134589995/xewobidade_xuwoluku_wapowipi.pdfIn PDF document text
    • https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/fejemenixurobife.pdfIn PDF document text
    • https://cdn.sqhk.co/jowowibow/GihjgyY/51385419329.pdfIn PDF document text
    • http://pudevivufug.22web.org/hereford_corned_beef_nutritional_information.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roxutudutupit.epizy.com/best_emulator_for_android_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/glyburide_metformin_medscape.pdfIn PDF document text
    • http://pevoxino.epizy.com/brought_up_formal_word.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/40450794880.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/tariwufisabojop.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB516 5896 bytes
SHA-256: 12a3c3562a736afd964332d8c1a2ac13219f43e050ce655920fd328574117c59
font_01_sfnt_off0000c8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EF 10624 bytes
SHA-256: 00d7e263d6ce4055125249dff182de8d3b29a31eda26583e70e16862b54b3145