Malicious PDF — malware analysis report

Static analysis result for SHA-256 507179ec6df8f216…

MALICIOUS

PDF

83.3 KB Created: 2021-03-22 23:08:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 87c3dfbf7839b9505dc556618b6faeaa SHA-1: aba9488e43a8e70a23889350fb80fb4451934b5c SHA-256: 507179ec6df8f21638d303329f74c116cab7f2877b9dcfc8bbadeed2f6dab39e
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 link farms, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://druttle.ru/wix?keyword=concert+ticket+sites+without+fees PDF link annotation
    • https://jaxedafotonomut.weebly.com/uploads/1/3/4/8/134885779/09cf36f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465007/normal_5fe504e4db3dd.pdfIn PDF document text
    • http://svoylend.xyz/15560452604bm4pl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446921/normal_6011756dae135.pdfIn PDF document text
    • http://copyright-securityx.com/wosolivunazodogembci.pdfIn PDF document text
    • http://kavademive.sportsontheweb.net/biology_spm_short_notes.pdfIn PDF document text
    • http://goxatut.iblogger.org/yoga_mudra_for_fatigue.pdfIn PDF document text
    • https://dajemegexiri.weebly.com/uploads/1/3/4/4/134492390/1967673585b5.pdfIn PDF document text
    • http://cosmostil.top/wonder_book_report_examples7mn17.pdfIn PDF document text
    • http://rixujewo.getenjoyment.net/what_are_the_strongest_intermolecular_forces_in_2-propanol.pdfIn PDF document text
    • http://katipef.medianewsonline.com/how_to_add_kwikset_to_z_wave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405687/normal_602a6d7e7504f.pdfIn PDF document text
    • http://luminar2-download.xyz/gelepalz3yf.pdfIn PDF document text
    • http://kikababono.mywebcommunity.org/52172502880.pdfIn PDF document text
    • http://fapenas.22web.org/90767072983.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://uploads.strikinglycdn.com/files/be099196-0bec-4748-ac1b-3ba3a69eec4a/algorithms_in_a_nutshell_2nd_edition_download.pdfIn PDF document text
    • http://badiwofotafazol.epizy.com/cabinet_of_curiosities_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae3fddf4-6b88-457f-95cc-d578b5308821/99209479449.pdfIn PDF document text
    • http://tamakibegotilo.epizy.com/sifaligen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b39937b-1476-48b5-ab29-f6b38b94363b/kipubat.pdfIn PDF document text
    • http://susabumo.atwebpages.com/mercruiser_4.3_intake_manifold.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaeb5b3c-83d3-4b6e-8aea-9fb7bc0fa929/how_to_check_the_transmission_fluid_in_a_2010_nissan_altima.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_off0000fd20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD20 4788 bytes
SHA-256: 449147b94b12f3c0758b8476fd1f5adacaf28fb4eedf2f73be48c29786517784
font_01_sfnt_off00010d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D77 10664 bytes
SHA-256: 8218d01bd2e4dfc7d9212e7d7d5bd3d27aefde6016040c8b05415a49173f4167
font_02_sfnt_off000131bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131BB 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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