Malicious PDF — malware analysis report

Static analysis result for SHA-256 109417f551df6672…

MALICIOUS

PDF

91.0 KB Created: 2021-03-10 09:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: ff0c5f49cf0598c8ec1458fea8dc0c2a SHA-1: a63fad5f47dc78d8aea32d64f5e4e317fddd9687 SHA-256: 109417f551df66722270e40787397cf223b95b8f82d8a297c3a80244aa9922e6
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a URL associated with a potential phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to external, potentially harmful, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://bologen.ru/strik?utm_term=sanyo+eneloop+charger+flashing+green PDF link annotation
    • http://se-mrush.com/87329615602y5qna.pdfIn PDF document text
    • http://larts.digital/viwenimexaxapewopub9c1oe.pdfIn PDF document text
    • http://domavera.ru/9049709188016m3l.pdfIn PDF document text
    • http://thestablestl.com/11504216584g0juv.pdfIn PDF document text
    • http://demask.space/death_note_meglio_manga_o_anime17t6b.pdfIn PDF document text
    • http://promooffer.site/how_do_you_use_a_craftsman_digital_multimeterrs98a.pdfIn PDF document text
    • http://100naturals.fun/principles_of_design_unity_and_varietyphwtk.pdfIn PDF document text
    • http://adachivia.store/computer_network_architecture_bookskyefa.pdfIn PDF document text
    • http://vvinorama.website/crazy_racing_car_2_mod_apk_downloadsrru3.pdfIn PDF document text
    • http://makamar.xyz/vizio_m43-c1_manualgkpju.pdfIn PDF document text
    • http://otomail.business/hunger_game_movie_download_in_tamil9g6we.pdfIn PDF document text
    • http://copyrightproblem.com/494224260773d1c8.pdfIn PDF document text
    • http://swast-group.website/fda_certificate_templaterlvw6.pdfIn PDF document text
    • http://logvoz.ru/kemabonogekalikafofufz9aml.pdfIn PDF document text
    • http://digitalcalakk1.xyz/suwirivulodawulof0z5ug.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://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_5b3765af470c4b3893a2d01664396c42.pdf?index=trueIn PDF document text
    • http://xinetonorus.epizy.com/how_to_clean_mold_from_whirlpool_duet_washer.pdfIn PDF document text
    • https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_ad4911174d364cc2b9d4064194d7eac6.pdf?index=trueIn PDF document text
    • http://puvusevakap.epizy.com/retanixutarojakiv.pdfIn PDF document text
    • http://mirepili.epizy.com/20919945305.pdfIn PDF document text
    • http://xokesuluz.epizy.com/xejowini.pdfIn PDF document text
    • https://f039f7e9-c7fa-441d-bf3d-2f0e35d6be10.filesusr.com/ugd/80685d_c0b7f3f188004e7ea8582acd4339326f.pdf?index=trueIn PDF document text
    • https://e8f98835-b194-42a5-b43f-fe2f29920dd6.filesusr.com/ugd/bf650e_92ce24623eb747f8b25785e8f0c0c355.pdf?index=trueIn PDF document text
    • http://pewavifasovifuz.epizy.com/reporter_gene_with_introns_slideshare.pdfIn PDF document text
    • http://suluzisose.rf.gd/badland_2_mod_apk_data.pdfIn PDF document text
    • http://xuwuwum.epizy.com/adb_mac_android_studio.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E0 5188 bytes
SHA-256: d2c4c503c3f7a55956ece96a0832f1ec0314b0bee42933746d9a371cb5cc2768
font_01_sfnt_off00012a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A74 11104 bytes
SHA-256: 418a69d2c5bbf17852b042c284a19817673c0b7b7ed3b3c9c02af0cd507135a1
font_02_sfnt_off00015034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15034 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e