Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb8351ba52ee3db…

MALICIOUS

PDF

68.9 KB Created: 2021-03-22 12:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 225a591e61a624226a37485e7f4546eb SHA-1: d3b4b1988c09fba9fbd18110a1a7416d469d089d SHA-256: cfb8351ba52ee3dbed5c68ce411d08aa213da58d9bc4f714a5c7ae046633a8af
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO spamming operation. One of the primary external URLs is `https://baarspo.ru/aws?utm_term=a+touch+of+class+auto+body+inc.+cleveland+oh+44109`. While no scripts were explicitly extracted, the presence of numerous external links and the ML classifier's high confidence indicate malicious intent, likely for distributing further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?utm_term=a+touch+of+class+auto+body+inc.+cleveland+oh+44109 PDF link annotation
    • https://vovasodakujex.weebly.com/uploads/1/3/0/8/130874601/madimuje.pdfIn PDF document text
    • http://legionmone.xyz/kudepiboxagekilapegukorer47mqk.pdfIn PDF document text
    • https://tawugeri.weebly.com/uploads/1/3/4/7/134774142/dikojudibima.pdfIn PDF document text
    • http://wisadovebedej.iblogger.org/why_wont_my_karcher_steam_cleaner_work.pdfIn PDF document text
    • http://lifegirls.site/factoring_trinomials_ax2_bx_c_answer_keyhw8nb.pdfIn PDF document text
    • https://wusunipusu.weebly.com/uploads/1/3/4/3/134320006/9785706.pdfIn PDF document text
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/fososomuramesewu.pdfIn PDF document text
    • http://pasoxegidameso.iblogger.org/summarize_the_information_by_selecting_and_reporting.pdfIn PDF document text
    • http://zaximudetebase.iblogger.org/the_secret_movie_on_netflix.pdfIn PDF document text
    • http://mysteps.online/alexander_hamilton_musical_lyrics_pd9rd58.pdfIn PDF document text
    • http://korecos.ru/los_gauchos_tacos_columbus_ohiomauea.pdfIn PDF document text
    • https://teraxawazolazov.weebly.com/uploads/1/3/4/3/134386914/galikojoke_todizubox.pdfIn PDF document text
    • http://lnstagramcopyrighthelps.com/22132683087ffumt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/the_veldt_movie_vs_story.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/celestron_nexstar_8se_bundle_review.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/12188656963.pdfIn PDF document text
    • http://xivoganunew.rf.gd/audi_a4_2016_user_manual.pdfIn PDF document text
    • http://mevutaleb.epizy.com/anchors_aweigh_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/16238454509.pdfIn PDF document text
    • http://dasiwof.epizy.com/77649336850.pdfIn PDF document text
    • http://dimarujevetuvif.epizy.com/block_story_creative_mode_free.pdfIn PDF document text
    • http://xikepilapap.rf.gd/how_to_reset_epson_wf_2630_printer.pdfIn PDF document text
    • http://vazorilumi.epizy.com/blood_bowl_2_halfling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/adobe_after_effects_android_equivalent.pdfIn PDF document text
    • http://jenabarove.epizy.com/ketafemikalisebanixizuvul.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_off0000cfa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA4 5772 bytes
SHA-256: d737ee8ad827787214c24a1f9514a7ba7d1f5d26461b89e74322e846e0307b5b
font_01_sfnt_off0000e366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE366 10080 bytes
SHA-256: c96fdf70567b438aa808897508d912846d74b8d99a2688ac82e56e2ebe9f1061

Open this report in the interactive analyzer, or submit your own file for analysis.