Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ab00caaf709e406…

MALICIOUS

PDF

84.1 KB Created: 2021-05-09 06:19:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 85d96589506db6dab3ed74705c21b19b SHA-1: d1caed99965a1c5125514f7e1d8c43c1f52ed6b4 SHA-256: 0ab00caaf709e4064dfe7b9fead4dc8d2b182c215d23c4016a7db3c915a63428
104 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The presence of a PDF URI pointing to 'jottigo.ru' suggests an attempt to redirect the user to a malicious download. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the phishing lure narrative, implying the document visually encourages a download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=printable+feelings+wheel+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421783/normal_602aeae058278.pdfIn PDF document text
    • http://bazubufawe.22web.org/26031049046.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385887/normal_5fc5c33641856.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416321/normal_6001ef4b8bd9a.pdfIn PDF document text
    • http://kojewotezigu.iblogger.org/stephen_hawking_movie_the_theory_of_everything_netflix.pdfIn PDF document text
    • http://jegagavakunumog.iblogger.org/weed_eater_riding_lawn_mower_reviews.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465704/normal_601b1fdf92146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463533/normal_601ed8a5ab030.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/votubukaxogilix/48681777149.pdfIn PDF document text
    • http://vizawog.epizy.com/gizokakena.pdfIn PDF document text
    • http://dafefixekonaxo.epizy.com/sajovofulazobava.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/57236243283.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/kivagitu.pdfIn PDF document text
    • http://ruzunol.rf.gd/jspdf_autotable_line_break_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/rejimizojobo.pdfIn PDF document text
    • http://gataluxogawix.epizy.com/17653407011.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/how_much_is_a_wolf_double_oven.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/23545527891.pdfIn PDF document text
    • http://pazatirademe.rf.gd/12607067504.pdfIn PDF document text
    • http://rumakepalo.rf.gd/8190637477.pdfIn PDF document text
    • http://dopudovorapimu.rf.gd/38908799369.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/division_of_polynomial_by_monomial_worksheet.pdfIn PDF document text
    • http://gujodelabugujaf.rf.gd/97112066321.pdfIn PDF document text
    • http://benifolagalat.epizy.com/54323889894.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/kinuson.pdfIn PDF document text
    • http://pekufupudemolor.epizy.com/ancient_civilizations_grade_4_worksheets.pdfIn PDF document text
    • http://vedujekobizu.rf.gd/13871538625.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/devilsaur_farming_guide_wow_classic.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF513 5536 bytes
SHA-256: 09af7a9a48367484ea5d70ada04addc9832501584ef938bac205c1aa6697dbb6
font_01_sfnt_off000107eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EB 10704 bytes
SHA-256: 9f399788c76bc93f0d37d1b784f1445132aaaeda589118277194c40c488a01f0
font_02_sfnt_off00012cbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CBE 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0

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