Malicious PDF — malware analysis report

Static analysis result for SHA-256 c413350ae3e894dd…

MALICIOUS

PDF

86.2 KB Created: 2021-03-01 18:43:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: a01f691cdf2dcb6436ac81e9337e7805 SHA-1: c83e6914fc9dcb200055731cd62a26e41a6465b1 SHA-256: c413350ae3e894dd02ea99941db8bd161ea562cfff4d81d7bbabe3910a085a55
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as a phishing trojan. The ML classifier also strongly indicates maliciousness. The presence of external URIs and link farm heuristics suggests the primary purpose is to redirect users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 https://botokaw.ru/123?utm_term=bodyweight+beast+pigmie+review PDF link annotation
    • http://sallely.xyz/piwekiravonowifiyb2xe.pdfIn PDF document text
    • http://wegaturagifo.getenjoyment.net/what_is_the_best_call_blocker_phone.pdfIn PDF document text
    • http://xubanapirobula.mypressonline.com/convert_powerpoint_to_keynote_ipad.pdfIn PDF document text
    • http://jokidinavefo.22web.org/elite_dangerous_mining_guide_4._0.pdfIn PDF document text
    • http://wirobigi.medianewsonline.com/44527130888.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/mukij.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/fojogovugim.pdfIn PDF document text
    • http://fizasibako.22web.org/kaspersky_antivirus_free_old_version.pdfIn PDF document text
    • http://kunonelujaver.22web.org/11645703332.pdfIn PDF document text
    • https://kuboteradaragi.weebly.com/uploads/1/3/1/4/131482952/simimubup_gativu.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/bopubemigalozepubub.pdfIn PDF document text
    • http://mamefumiwuto.mywebcommunity.org/who_does_mollie_symbolize_in_animal_farm.pdfIn PDF document text
    • http://fevinoreniwelik.sportsontheweb.net/sifukotemiminopaxojik.pdfIn PDF document text
    • http://podarokinsta365.site/how_much_is_a_verizon_hotspot_per_monthbh18u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jugefewaxuxuf.epizy.com/congruent_shapes_worksheet_gcse.pdfIn PDF document text
    • http://malebujezasipip.rf.gd/sekijofejajo.pdfIn PDF document text
    • http://birofasadonu.epizy.com/best_electronic_simulator_for_android.pdfIn PDF document text
    • http://terefikug.epizy.com/zamuwopedovexok.pdfIn PDF document text
    • http://rimupikerotazes.rf.gd/gozaxi.pdfIn PDF document text
    • http://mukesul.epizy.com/frasi_di_chiusura_mail_in_inglese.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_off000112bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112BF 5784 bytes
SHA-256: a6d611d992224b61e0031a778c7ef4a133e613d2356d056d293c7566123da99d
font_01_sfnt_off00012662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12662 10808 bytes
SHA-256: 43a49f74e66c0025c1c4390c35eb3ddf8719f66f5bdecf6573167224b0dc7b9b

Open this report in the interactive analyzer, or submit your own file for analysis.