Malicious PDF — malware analysis report

Static analysis result for SHA-256 06fac5678169ce7f…

MALICIOUS

PDF

86.0 KB Created: 2021-03-12 19:45:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 47ee0caf276d5587778f68f3f5ee93fa SHA-1: deca34d19e1bbd1eca8ddb160cdde60a4185a19c SHA-256: 06fac5678169ce7fe4d40f41d9969f63b62635b9f6151bd11e95e5219c8bcd84
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs and exhibits characteristics of a link farm, suggesting a phishing or SEO manipulation attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URIs are indicative of malicious activity, likely involving the redirection of users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/wix?keyword=kentucky+falls+oregon+weather PDF link annotation
    • https://fafenerukore.weebly.com/uploads/1/3/1/3/131398145/2914458.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/jesus_what_a_wonderful_child_chords.pdfIn PDF document text
    • http://creditscorecard.info/saverefocebmu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373782/normal_601eca31b2813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471711/normal_602f83a81c439.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/discrete_mathematics_and_its_applications_5th_editionuagvs.pdfIn PDF document text
    • http://dalkomis.website/hush_little_baby_lullaby_songs_for_babies_mp3_free_download1btcx.pdfIn PDF document text
    • http://copyrighytsupport.com/93296926251nksls.pdfIn PDF document text
    • http://bitalotava.scienceontheweb.net/real_estate_finance_and_investments_14th_ed_by_brueggeman_fisher.pdfIn PDF document text
    • http://obschee.xyz/flow_cytometry_compensation_pptsp59s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483365/normal_5fc8a9e558e96.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/32677859802.pdfIn PDF document text
    • http://santand-es.com/kugawanabijaviridiz14wgv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380527/normal_602ac4a42b6e6.pdfIn PDF document text
    • http://winnerslm.space/ouroboros_dragon_breeding_timew9hml.pdfIn PDF document text
    • https://kobejepofefes.weebly.com/uploads/1/3/5/3/135317692/zozaviv.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/what_is_civil_religion_in_sociology.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vemesivudaro.epizy.com/saludebominutakatirako.pdfIn PDF document text
    • http://nitusul.rf.gd/apple_visual_identity_guidelines.pdfIn PDF document text
    • http://gikuxoxabak.epizy.com/capteur_de_courant__effet_hall.pdfIn PDF document text
    • http://nuwadolonopip.onlinewebshop.net/99307208041.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_off0000fe8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8B 5368 bytes
SHA-256: d7919d246533f0eb9450dae6340c56c56fe5e9616c0c3678c7c5b8a6ecb59ae9
font_01_sfnt_off000110ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110ED 10732 bytes
SHA-256: fe215ec36c85ae01131e9e32a70a21c8bc9c9756e231e5d8da9be268229cef9e
font_02_sfnt_off0001356c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1356C 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e

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