Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1d3abed82e4e7f…

MALICIOUS

PDF

83.0 KB Created: 2021-04-06 11:39:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 661208caf81f7be93d6e8579a0540cab SHA-1: 590ff5a08ce0d9f6cc524321f4f146d5e9147ede SHA-256: ae1d3abed82e4e7ff88b14c26327b89cfac0e470413690ed92e1ab8cf4554ae0
166 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including suspicious and invisible links pointing to external domains. The ML classifier and ClamAV detection strongly suggest this is a phishing or trojanized PDF. The embedded links, such as http://ig-supportcenter.xyz/769392835946qacm.pdf, are likely used to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://druttle.ru/wix?keyword=elements+of+ecology+9th+edition+pdf PDF link annotation
    • http://jusojixanona.getenjoyment.net/mabib.pdfIn PDF document text
    • https://leburivirabilaz.weebly.com/uploads/1/3/1/4/131453170/xilakos.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/babits_mihly_jns_knyve.pdfIn PDF document text
    • http://auto-agents.space/novels_by_iqra_sagheer_ahmedvx40p.pdfIn PDF document text
    • https://junerokiwoji.weebly.com/uploads/1/3/0/7/130775834/nudevumemopa_fidolure_guropo.pdfIn PDF document text
    • https://bewanabexujafo.weebly.com/uploads/1/3/6/0/136050633/c47442c57e.pdfIn PDF document text
    • http://wersita.space/lebulu7bc9.pdfIn PDF document text
    • https://limavewudadeku.weebly.com/uploads/1/3/5/3/135323498/loxigupakeguf_wurebese_vipafukemake_fibedawevosiki.pdfIn PDF document text
    • http://ig-supportcenter.xyz/769392835946qacm.pdfIn PDF document text
    • http://levitajagukog.scienceontheweb.net/54759471326.pdfIn PDF document text
    • http://vevovifox.scienceontheweb.net/sojakigejozefikekujalis.pdfIn PDF document text
    • https://kebedemozi.weebly.com/uploads/1/3/0/7/130775588/5312765.pdfIn PDF document text
    • https://bekitatabegoze.weebly.com/uploads/1/3/0/7/130775701/bivem.pdfIn PDF document text
    • https://fitulepam.weebly.com/uploads/1/3/0/8/130874207/fazekexaloxozako.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b17b0ad8-8ea8-4edc-9a36-e0b0bc6dab06/halex_3200-q_electronic_dartboard_manual.pdfIn PDF document text
    • http://telosizaba.onlinewebshop.net/agrianual_2020_download.pdfIn PDF document text
    • http://sekuwomexapa.myartsonline.com/importancia_de_los_alimentos_transgenicos.pdfIn PDF document text
    • http://xadilopavut.myartsonline.com/93124170018.pdfIn PDF document text
    • http://pazepoxi.atwebpages.com/43032148651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ecc9846-a90c-45c3-a0dd-d8b2ba3fda93/52703467135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60352ded-f613-4e50-9df4-13ab1956f04f/2003_dt466e_valve_adjustment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff9543f9-b83a-4f51-abd1-65471bf21ed7/76569882486.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a98e0fc4-2c8a-45f0-98d8-2bf1263bc01f/operating_instructions_for_bissell_proheat_2x.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_off0001036f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1036F 5476 bytes
SHA-256: 329886c9533fed78a7014fda2f8d5e7a6f03648b117c2af8f7914a5c60da9e27
font_01_sfnt_off00011605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11605 11904 bytes
SHA-256: 55763f99d7ce6d07015a4de20d27fc973d1818bcd86be892ce5fda09a95a1113