Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e66699cade7a6f2…

MALICIOUS

PDF

74.6 KB Created: 2021-05-08 17:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 469ec03d812e42c229d5cea455fe7515 SHA-1: 6b3a63594b55cfb1d2766f2a7ee0239e64e488ea SHA-256: 2e66699cade7a6f2453457373cbfe20870b05718cc93a2ac2e54dffd071557e3
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains a title suggesting a lure for users to click on embedded links. The presence of multiple unknown reputation URLs, including one directly associated with the document's apparent topic, strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=how+to+connect+bluetooth+selfie+stick+with+mobile PDF link annotation
    • http://f1l3download.site/15104931648t4npf.pdfIn PDF document text
    • http://kprovk.xyz/esio_trot_film_age_ratingnsg4h.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://piredvizhnik.com/nordictrack_a2350_troubleshootingzgbo3.pdfIn PDF document text
    • http://swiss-gear-top.xyz/m_audio_axiom_pro_49_drivershxfzs.pdfIn PDF document text
    • http://snegny.com/piano_sonata_no._14_in_c-sharp_minor_op._27g53ge.pdfIn PDF document text
    • http://tvoy-ogorod.online/how_to_unlock_honeywell_thermostatfn2rs.pdfIn PDF document text
    • http://wowitaly.pro/bebinapegotevuvse8l5.pdfIn PDF document text
    • http://storeplus.pro/dell_precision_4903174n.pdfIn PDF document text
    • http://menformula.xyz/trait_points_lotroibjj3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb44882c-9c89-4de3-af02-72c7d9632457/32_mm_a_pulgadas_tuberia.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/43610940785.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4820a792-a672-4b8a-9fb8-17bd7956ceef/6584517030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f1d5781-3228-49d5-a453-c091e3435508/nature_reviews_molecular_cell_biology_impact_factor_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72d00960-8898-49e5-9dfa-08ea49428049/59710949311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/020a5313-523f-4b9f-8a1e-cfc4e0a6a288/38753804163.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e95cd96-ff63-4762-ab77-e16327763240/definition_enthalpy_change.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cf51ba3-f9b2-4eb2-b58f-114dd4093c54/pawedilimidetefowegonuxur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a812324-8df7-4237-9cae-4c85a9154b27/ps3_controller_pc_program_download.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/apache_cassandra_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/32048209081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f0a15c7-4fc6-4ec5-8693-3891010e576a/honda_hrx217vya_vs_hrx217vka.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_off0000e7a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A6 5072 bytes
SHA-256: cd8885f829abad54d464b6f64e26f14712732c5997d44f37e38143ebfbb418d2
font_01_sfnt_off0000f8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D8 10480 bytes
SHA-256: 77388f9bf89e1dcfc6d0893c26bb72d27cf2152672dd6a184597bdf5229cf7b5

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