Malicious PDF — malware analysis report

Static analysis result for SHA-256 84a1beb1c72d88cf…

MALICIOUS

PDF

74.6 KB Created: 2021-02-27 14:16:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 94dbcc80409b3342ee0becaad5af779a SHA-1: f1e432ab66cd9ef6e09f544c74c7168c76f6d067 SHA-256: 84a1beb1c72d88cfdddf6681a25613eb68b77aad84ab31d66d8735a66a496a60
184 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with at least one identified as a redirector to known malicious infrastructure. The document body is heavily obfuscated and appears to be a lure, likely for phishing or malware distribution, leveraging the embedded links to direct users to compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=dual+roller+gate+guide In PDF document text
    • https://lixawedubofalat.weebly.com/uploads/1/3/1/4/131407760/1843938.pdfIn PDF document text
    • http://metoxegid.mygamesonline.org/jenn_air_range_top_with_grill.pdfIn PDF document text
    • http://lowadikewafuber.iblogger.org/didarimogojavaxipajejiz.pdfIn PDF document text
    • https://lilugotowo.weebly.com/uploads/1/3/2/7/132711957/xixosugobupedav_xazezuz.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/nepal_constitution_day_2019.pdfIn PDF document text
    • https://zogoporev.weebly.com/uploads/1/3/1/3/131381602/b1ad37d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421966/normal_600c1cab2b345.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/17874424419.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460972/normal_5feb7a19ea003.pdfIn PDF document text
    • https://cdn.sqhk.co/dakubakasilu/eHa2jcr/dafesetovekolofibifuzafep.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/classical_guitar_exercises.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/what_is_the_difference_between_hatha_and_vinyasa_yoga.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/X9gc6US/intermex_international_money_express_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/zoboxoba/ihFqIYT/jajavamigomuri.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dazifozixawus/adobe_acrobat_pro_reader_extended.pdfIn PDF document text
    • http://kebanibaru.epizy.com/opera_mini_web_browser_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/audio_file_trimmer_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzakob/inconel_625_sheet_properties.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/product_inventory_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB19 4588 bytes
SHA-256: 0dc20efa3ff8ec63e7372315a511019f29b3786238abcf838130553fe1b0e0c7
font_01_sfnt_off0000eac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC9 10492 bytes
SHA-256: 6a0d7dfa22a06ee4b772592f3af7ee85bea73dc231d7383e77aeb853e5a02127
font_02_sfnt_off00010e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9E 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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