Malicious PDF — malware analysis report

Static analysis result for SHA-256 f09f569168ef9f30…

MALICIOUS

PDF

81.6 KB Created: 2021-03-29 04:26:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: dfb558e8a6526031ab48ad219da1011e SHA-1: b076eddfa57694a6ff1f4c4a39e46d9bedc1eeec SHA-256: f09f569168ef9f30a2311230cdeccc4d0d06017d90e6a042605f7624f838a376
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan PDF. It contains numerous embedded URLs, with a primary focus on directing users to 'fokemale.ru', which appears to be part of a link farm. The PDF's structure and embedded content suggest an attempt to disguise malicious links as legitimate downloads, likely for phishing or malware distribution.

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://fokemale.ru/wix?keyword=vocaloid+songs+about+abuse PDF link annotation
    • http://heleogose.online/60160662178zeawx.pdfIn PDF document text
    • http://termo-nord.tech/philip_kotler_marketing_management_book_latest_edition0x332.pdfIn PDF document text
    • http://9gusevshop.space/how_to_find_taylor_series_in_mathematica0dfvb.pdfIn PDF document text
    • http://tradestaroffice.com/free_fire_safety_download_for_pcs3tel.pdfIn PDF document text
    • http://bestgirl69.com/8296956004qvx8l.pdfIn PDF document text
    • http://poguvezi.22web.org/zonapaberige.pdfIn PDF document text
    • http://marketitaly.info/hopdoddy_menu_el_segundo0stk7.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/en_una_tabla_periodica_cuantos_elementos_son_naturalesrgesz.pdfIn PDF document text
    • http://gravkamen.ru/logistic_assistant_interview_questions_and_answersaknec.pdfIn PDF document text
    • http://tuwavetatifida.iblogger.org/aerosmith_festival_2017_setlist.pdfIn PDF document text
    • http://frukt.space/mightier_than_the_sword_jeffrey_archerc3j1r.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
    • http://nidedos.rf.gd/reading_comprehension_worksheets_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a7e3819-f9f7-4c82-a124-7fc49da13b84/when_the_terms_of_sale_are_fob_shipping_point_legal_title_to_the_goods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84800e55-a62a-47d5-9a8b-c5977aa76a1a/does_h2s_have_hydrogen_bonding.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/gopux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d20553f-144e-4593-86b6-718c1ca778ea/bemavotefaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b53819a7-be9a-4e22-9d6b-71d5c883bb19/36981606402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40f11a0f-ed29-40f8-9d82-41d945609610/8049285392.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/wagowowaxapebiwenuva.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60E 3320 bytes
SHA-256: 0a084aa6fc7160bcf50f60fed1a510b593369d619aca651d621140846386c062
font_01_sfnt_off0000f1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F0 5000 bytes
SHA-256: 83020eae65da900af5f78ede6c4a07df66cf95ec163d750fed21896fb405d02f
font_02_sfnt_off000102f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F3 11120 bytes
SHA-256: fd88800f9f1650432c3eecff75f143fa7009c6a114d35e5bcdc792ba29a68159
font_03_sfnt_off00012929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12929 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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