Malicious PDF — malware analysis report

Static analysis result for SHA-256 09187547bcdd24cc…

MALICIOUS

PDF

87.5 KB Created: 2021-03-31 09:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c220d857251924abe0496aa43ad0e86a SHA-1: d59e22b1b1f66c2d06934f9f99e19acd4ab8994f SHA-256: 09187547bcdd24ccddf7f6e6429dd75bfe01780b6116f8f644c85ea1e901fbd4
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable or unknown domains, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are characteristic of phishing lures, often used as a first stage in a broader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://pelibifir.ru/award?keyword=the+armchair+economist+pdf+free PDF link annotation
    • http://sibuvre.com/lixixikududrpoy.pdfIn PDF document text
    • http://opensalle.xyz/18358100136sqler.pdfIn PDF document text
    • http://mybestchan.online/what_are_kind_words_that_start_with_the_letter_yhiiy0.pdfIn PDF document text
    • http://in-arenas.com/career_development_smart_goals_examplesevuzh.pdfIn PDF document text
    • http://ig-copyrightnoticehelp.com/juguwuclloz.pdfIn PDF document text
    • http://akillidestekbasvuruformu.online/dracula_bram_stoker_wikipedia_english5m1pj.pdfIn PDF document text
    • http://badgesverified.com/pete_the_cat_rocking_in_my_school_shoes_song_youtube5h5uo.pdfIn PDF document text
    • http://mamontov-net.cc/80510535777tl09x.pdfIn PDF document text
    • http://pipvip.ru/yeezy_700_black_and_whitex7xhg.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://s3.amazonaws.com/saxefi/64732407465.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/kalista_guide_pro_builds.pdfIn PDF document text
    • https://587b455d-cc79-4428-8e80-a8b75ce23bca.filesusr.com/ugd/021ec8_f95bf87ab4214896a3136b6fe3057b62.pdf?index=trueIn PDF document text
    • https://7133fc40-0b9c-4701-b953-e7fafc934b44.filesusr.com/ugd/70a38d_51104d7a5de643b196c0c8271a2d16f4.pdf?index=trueIn PDF document text
    • https://492f55f4-3442-4b37-b17e-39d9f2f0ae8a.filesusr.com/ugd/7dfe85_f74a2b68938240e8ae9e25bc77d1bf6b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/doorking_1812_replacement_keypad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fad2c875-3eb9-4a60-964f-320cd8ecc913/what_to_the_slave_is_the_fourth_of_july_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/malignant_hypertension_guidelines_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01a2e26b-5425-4dbe-aba0-d2a703570be5/romeo_y_julieta_reserve_review.pdfIn PDF document text
    • https://989244f3-426d-4557-b4f1-0018dac9047c.filesusr.com/ugd/57c819_b8cc7da01e9449de96f3bfe4bf99d16f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f6e3ad6-8adf-4242-bfc8-477c94e4f224/compare_pentax_k3_and_k3ii.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/55097181808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fee1c69-d8cc-48cd-bf6c-74cc55adfee9/26102198679.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/21st_birthday_invitations_boy_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f5cb720-6ea8-40f0-a1af-5dcd9915a753/rabonedazoja.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_off0000d383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD383 18332 bytes
SHA-256: 41dd1b9dec13bf81ad706c826bcee3e29c262bd7346c1384cce8f9c683629e95
font_01_sfnt_off00010d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5A 5100 bytes
SHA-256: 89209510f2180c8c21b11a918733a3e513cf04720c044b4388eb5e34df877613
font_02_sfnt_off00011e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E7F 10400 bytes
SHA-256: 3cd709e455c152f44750650304ac5bf51f1f2c072bc2c69afa36d6ff4faf449c
font_03_sfnt_off0001421c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1421C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f