Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd81f96299078aad…

MALICIOUS

PDF

70.2 KB Created: 2021-04-01 08:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e98066c95f55e2f526e57c9428538b0e SHA-1: f1def4573dee90298ea0b0800b3895e892ef7d9b SHA-256: dd81f96299078aad554855c8b6c983225fa74dc73ab96ba74ffd566da01ac840
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan delivery mechanism. It contains numerous embedded URLs, with one prominent URL pointing to a site that appears to be a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to search results or answers, aligning with phishing tactics. No scripts were extracted, but the PDF structure and numerous external links indicate an attempt to redirect the user to malicious content.

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
  • 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://golowaki.ru/wix?keyword=chapter+29+florence+the+cradle+of+the+renaissance+answers PDF link annotation
    • http://vubitim.sportsontheweb.net/30359321995.pdfIn PDF document text
    • https://kakituku.weebly.com/uploads/1/3/4/5/134589995/2433678.pdfIn PDF document text
    • https://wafitaweligu.weebly.com/uploads/1/3/4/5/134587259/9700019.pdfIn PDF document text
    • http://bomisedoxu.mywebcommunity.org/academic_writing_sample.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/9839830.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuvuzoruzanawip.epizy.com/bunetabijekumatos.pdfIn PDF document text
    • http://pasofotamuteper.atwebpages.com/bise_sukkur_matric_result_2020.pdfIn PDF document text
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_691ff58ddb0b4c84926e401946eb91d4.pdf?index=trueIn PDF document text
    • https://c83cbd6e-a134-4b49-ba12-49f24c654ad9.filesusr.com/ugd/904a8b_f3269701bc254721a027bd8ebf2325ed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/guvovigo/azhage_azhage_free.pdfIn PDF document text
    • http://gemuviwir.rf.gd/85138672528.pdfIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_bd0ea1a25bc04cc6b59082872d2ad68e.pdf?index=trueIn PDF document text
    • http://vibufek.epizy.com/bodyguard_film_teri_meri_song.pdfIn PDF document text
    • https://11627308-8c8f-4f08-99ed-0ad85160907d.filesusr.com/ugd/682d1c_4a5e9aa3de49437abd59f667645a993c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sasufufa/sosujuredinuwadikajekexub.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/66858349127.pdfIn PDF document text
    • https://c534e673-b245-4a6d-8787-855fe96db707.filesusr.com/ugd/e19215_07f13af0a9754eba8ad6cf27516fca04.pdf?index=trueIn PDF document text
    • http://rivetibixonapaz.myartsonline.com/david_goggins_can_t_hurt_me_download.pdfIn PDF document text
    • https://7f993087-45f6-41f4-96e5-9dcaca18fb91.filesusr.com/ugd/9a92dd_cc9c2c6d0be64caea6d629153c4a1480.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/desenaz/camtasia_studio_official_website.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_off0000d3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AD 5528 bytes
SHA-256: f1ac1c362ee4e2e5e9c576349ff732673928dd832c48272d518149f9ff4c17c9
font_01_sfnt_off0000e67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67E 10616 bytes
SHA-256: 6e15de5fbc5c1e52eda372fd808cd13b1e2b1f5c057a044e746c740bb541bf99

Open this report in the interactive analyzer, or submit your own file for analysis.