Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc069a6ac7c3bd90…

MALICIOUS

PDF

84.1 KB Created: 2021-09-16 20:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d5b831bc271533b2db973b123c8f80d7 SHA-1: 47e4e23bb0a6cdc7fc14ddb3b5379d1ce6d3a6cc SHA-256: cc069a6ac7c3bd9098b70c85b4d8490ebc06f01d09d0ed5d6cd7a4ca414708e7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which are part of a link farm designed to redirect users. One notable URL, 'https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=mini+militia+hack+apk+new+version+download', suggests a lure for game hacking tools, indicating a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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 http://lyzebrno.cz/userfiles/file/zepazu.pdf In PDF document text
    • http://unicaconsultoriarh.com/images/files/2472480804.pdfIn PDF document text
    • http://tnslib.tools/userfiles/files/36312741584.pdfIn PDF document text
    • http://infosierra.es/images/editor/nunoveginifofewufixe.pdfIn PDF document text
    • http://tvoirostov.ru/ckfinder/userfiles/files/wemolevudobubavoluxuze.pdfIn PDF document text
    • http://sanchariglobal.com/userfiles/file/nitipigusazivetadafudugev.pdfIn PDF document text
    • http://fsgzb.com/upfolder/e/files/20210916054612.pdfIn PDF document text
    • http://giaodantanthaison.com/Images_upload/files/tunirimilimipajagob.pdfIn PDF document text
    • http://piazzademarini3ge.com/userfiles/files/lategadozuzuwutodizipumu.pdfIn PDF document text
    • https://sluganarodu.org/userfiles/files/55614656954.pdfIn PDF document text
    • http://sportingfoundation.com/uploads/file/8557448210.pdfIn PDF document text
    • https://ku4ysk-9lgp4y.com/contents/files/suzijadonerapijifiruvi.pdfIn PDF document text
    • https://ita.kru.ac.th/ckfinder/userfiles/files/50972614785.pdfIn PDF document text
    • https://penzionradvanice.cz/res/file/75060114647.pdfIn PDF document text
    • http://teplo76.ru/uploads/file/sipizexonazeser.pdfIn PDF document text
    • http://oshcongregation.com/userfiles/file/70516563182.pdfIn PDF document text
    • https://hsse.hssanesteban.cl/files/xudowijiladelebazuxokefu.pdfIn PDF document text
    • https://stormester.no/files/file/61131325880.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/f01ed70e081d9d466fc0edc6db7091bb/bitagirinido.pdfIn PDF document text
    • https://dm288.rs/slicice/file/42665439602.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140a8c309336---gifewit.pdfIn PDF document text
    • http://td-mg.ru/uploads/files/6783332592.pdfIn PDF document text
    • https://baruipur.org/ckfinder/userfiles/files/30443498561.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/76950311221.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/xatapu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=mini+militia+hack+apk+new+version+downloadPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE338 17564 bytes
SHA-256: 346f631544a139ffe89b522d292e633cc387c36f525f5823168f1b65b0c7228d
font_01_sfnt_off00011071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11071 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12888 11016 bytes
SHA-256: 6eba5efee28ba79792759f097a6d19cdc95b11b6e9b8918caca7a8e550ed02d0