Malicious PDF — malware analysis report

Static analysis result for SHA-256 009366f364e3a0d8…

MALICIOUS

PDF

86.5 KB Created: 2021-03-03 22:58:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 32632e3454af91b702036991d7bc639c SHA-1: 6311b27843a64a9e7bfed991ee464b6fdd40ba8b SHA-256: 009366f364e3a0d83621e2585c3cfeea94fe0094049bf8bc87de3dd998a097a3
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs that point to known malicious redirectors and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a common phishing lure designed to redirect users to malicious sites.

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
  • 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://crophysi.ru/award?keyword=how+to+put+music+on+my+ipod+nano+7th+generation In PDF document text
    • http://jebebixazonutug.mypressonline.com/el_lazarillo_de_tormes_tratado_1_la_venganza_analisis.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/Yhdgdjc/fogin.pdfIn PDF document text
    • http://dofujifeluradep.medianewsonline.com/navy_seal_basic_training_length.pdfIn PDF document text
    • http://burivuvuju.medianewsonline.com/kitchenaid_pro_600_replacement_parts.pdfIn PDF document text
    • https://wuxebejodivo.weebly.com/uploads/1/3/6/0/136030931/rokifonife.pdfIn PDF document text
    • https://federadedeladol.weebly.com/uploads/1/3/4/6/134626130/e48d62f92.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/que_establece_la_ley_de_ohm.pdfIn PDF document text
    • http://gejulavofanutar.mygamesonline.org/robinson_crusoe_original_book_cover.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/shfjjC3/40412896617.pdfIn PDF document text
    • http://mijudivoxobo.iblogger.org/bipolozepepizufofe.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/uTjaKiI/xeduvi.pdfIn PDF document text
    • https://jevizaja.weebly.com/uploads/1/3/4/8/134869407/xopolisupidu-pepozezif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://liraperuwuw.atwebpages.com/91458075507.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/97371127048.pdfIn PDF document text
    • http://litorow.myartsonline.com/visual_studio_ultimate_2013_product_key_msdn.pdfIn PDF document text
    • http://gonidiwofove.epizy.com/begotten_not_made_catholic_answers.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_off0000fe21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE21 5692 bytes
SHA-256: 14cbe99417cf3b935306b5d287c39f28a5881be9500b0062703c5609823579e5
font_01_sfnt_off00011174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11174 10572 bytes
SHA-256: 87b686fbf178dae9463d0fa85ada8e0b5acb3cf45c1e420737a2da0e3d7cb4ce
font_02_sfnt_off000135d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135D1 16676 bytes
SHA-256: a3e64af85b01c87170007f3266092c0876dc0fccad7fb54df438516ce0427341

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