Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e39c8a77c04563…

MALICIOUS

PDF

79.6 KB Created: 2021-03-17 21:10:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 561f96fe843ee9e95fa3fdae48a5df5d SHA-1: c682604c1444a7b9c922521d2c8bd842e1773bdf SHA-256: e6e39c8a77c045631d2cea81818e02b3487aa9c00a29a729d021deed6cf70244
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm on disposable hosting, with numerous external URIs pointing to potentially malicious domains. The document body, though heavily obfuscated, contains metadata suggesting it's a tourist map, a common lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://fokemale.ru/award?keyword=budapest+mappa+turistica+pdf PDF link annotation
    • http://nodalaxav.22web.org/66358716793.pdfIn PDF document text
    • http://tivaxamikesu.iblogger.org/apsa_80_brochure_in_english.pdfIn PDF document text
    • http://vomidujoma.scienceontheweb.net/are_bobbi_brown_brushes_worth_the_money.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_60158d9bebcad.pdfIn PDF document text
    • http://simabozarulo.iblogger.org/how_old_is_my_browning_auto_5.pdfIn PDF document text
    • http://wifunagidoli.mypressonline.com/jovifulozivorav.pdfIn PDF document text
    • https://fotijaxak.weebly.com/uploads/1/3/4/1/134108731/492375.pdfIn PDF document text
    • https://xipejefokodidub.weebly.com/uploads/1/3/4/6/134612454/ad5fa159d31b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383805/normal_6031ef00287f1.pdfIn PDF document text
    • https://wanovupejofo.weebly.com/uploads/1/3/4/5/134580977/kojeg-puxanirowix.pdfIn PDF document text
    • https://desalipi.weebly.com/uploads/1/3/2/6/132681317/e97ed9bddd88297.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369655/normal_6039d97222bf7.pdfIn PDF document text
    • http://velixone.66ghz.com/33939024294.pdfIn PDF document text
    • http://napowojeba.medianewsonline.com/can_cricut_expression_2_cut_vinyl.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/48006237460.pdfIn PDF document text
    • https://nanoxoxudotu.weebly.com/uploads/1/3/0/8/130814682/7902093.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384640/normal_602b484c9f1b1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxiwudogosos.epizy.com/fejalep.pdfIn PDF document text
    • http://weparaxopulo.atwebpages.com/4607639044.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/human_resource_mgt.pdfIn PDF document text
    • http://xenezipulugiji.atwebpages.com/commento_cantico_dei_cantici.pdfIn PDF document text
    • http://wanigag.rf.gd/32458573994.pdfIn PDF document text
    • http://nabunuwo.epizy.com/47275192865.pdfIn PDF document text
    • http://josatagosovux.rf.gd/aashiqui_2_all_video_song_free.pdfIn PDF document text
    • http://kususen.myartsonline.com/xiromopoja.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_off0000f60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60F 5320 bytes
SHA-256: e55231d27355b6a8cb3df62fa1f389bc9221143357292af70d532c848e29ecc6
font_01_sfnt_off00010811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10811 13012 bytes
SHA-256: 33e3fc039c20d2c4b71bfad0a5ba3b3b505c64e1610ba0515ecf150506ca1f6e

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