Malicious PDF — malware analysis report

Static analysis result for SHA-256 b22ee9cc7ecd4a94…

MALICIOUS

PDF

82.9 KB Created: 2021-03-10 17:33:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ae068a1ddc4b93b6646e327f5253d7e9 SHA-1: 34fb4561d2ce0e39b920f9d05f0c641c4a270b0e SHA-256: b22ee9cc7ecd4a9467fca7a3dee15cc2c883eca90edd4bafd0ab0bb6a44b2c04
126 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to disposable domains, and one specific URL is highlighted as a potential lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded links suggest an attempt to redirect the user to a site that may host further malicious content or phishing forms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://baarspo.ru/wix?keyword=sorry+not+sorry+naya+rivera+pdf+gratis+espa%25C3%25B1ol PDF link annotation
    • http://rebelliona.online/jawenuzuperijozi31hbt.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/7bheeid/dark_knight_rises_hbo_max.pdfIn PDF document text
    • https://cdn.sqhk.co/zawafolor/Xgjjggg/cartoon_couple_hd_wallpapers.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/do_english_pointers_make_good_family_pets.pdfIn PDF document text
    • https://cdn.sqhk.co/jerizukop/jfV7kgf/movie_amazon_prime_best.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/wsvhaih/53881711182.pdfIn PDF document text
    • http://bukuxojunuz.mypressonline.com/47691314075.pdfIn PDF document text
    • http://vwwv-avito.online/where_is_babylon_todaynlsiv.pdfIn PDF document text
    • http://formverifiedbadge.com/2830536022365dnd.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/how_much_is_a_long_haired_dapple_dachshund.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/a8h1ENH/57273906402.pdfIn PDF document text
    • http://repair-foto.ru/what_to_do_in_the_first_90_days_as_a_new_manageriom78.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://sebavorapu.rf.gd/whos_afraid_of_virginia_woolf_plot.pdfIn PDF document text
    • http://taruxapajosavup.epizy.com/is_a_trust_a_legal_entity_in_florida.pdfIn PDF document text
    • http://bavufupuvamopaf.atwebpages.com/alanea_alder_my_solace.pdfIn PDF document text
    • http://gidimuni.epizy.com/non_conformity_report_ne_demek.pdfIn PDF document text
    • https://502f924d-676a-41b3-8220-87c01882f600.filesusr.com/ugd/5a20bb_268981ecb5a946a9aba4515c52a2c613.pdf?index=trueIn PDF document text
    • http://rinejifivazori.epizy.com/62766013473.pdfIn PDF document text
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_3908f35dfaf04831bc7f05cbf1740d68.pdf?index=trueIn PDF document text
    • http://bopubedoru.myartsonline.com/essentials_of_biostatistics_in_public_health_3rd_edition_free.pdfIn PDF document text
    • https://74269c25-1731-4359-90d4-804f54ef9c1c.filesusr.com/ugd/b5973a_c683c34c8ce04be880db9472d3347d20.pdf?index=trueIn PDF document text
    • https://0c2a99dd-71fd-4a0d-b96f-672cfa785c21.filesusr.com/ugd/515c54_11fbcf999a554cceb0435ed29ffd5264.pdf?index=trueIn PDF document text
    • http://marabawem.rf.gd/biripat.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_off0000ec3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3B 5472 bytes
SHA-256: a33aa7a63892c6ea28794e8d744eab384a1a0492261c3159cfee84e9f70185f0
font_01_sfnt_off0000fea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA3 2012 bytes
SHA-256: 992315b7afa541c246418d50ae298d4c0c52fa89e22a406eca06571bc34ece04
font_02_sfnt_off0001084b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084B 11032 bytes
SHA-256: 534636f1f450e59db3b352ffb365451a5be2ac1a6c1de95167b94c7660fe90fc
font_03_sfnt_off00012d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D1B 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378