Malicious PDF — malware analysis report

Static analysis result for SHA-256 0597a296753272b3…

MALICIOUS

PDF

70.5 KB Created: 2021-03-24 01:26:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82eefeb732654a745fca24e4d22339bb SHA-1: 2941c4ad92ab7019f8e221ba3645bbb564ac9e53 SHA-256: 0597a296753272b3ce66f54019504728b6dedc6209209d799d9795bbdf04fd29
156 Risk Score

Malware Insights

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

The file is a PDF that contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM'. The primary external URI points to a domain designed to appear as a download link for 'agronomy crop production pdf download'. This suggests a phishing or malware distribution attempt, likely using spearphishing attachments as the initial access vector. No scripts were extracted, but the PDF structure and numerous external links are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/award?keyword=agronomy+crop+production+pdf+download
    • https://somubafe.weebly.com/uploads/1/3/4/4/134444697/wefeb.pdf
    • https://roxeviviko.weebly.com/uploads/1/3/5/3/135317288/jatowusup.pdf
    • http://recepty-dd.info/financial_advisor_job_summary_for_resume33dqo.pdf
    • http://wowitaly.pro/what_is_the_best_portable_cd_player_to_buyogax5.pdf
    • http://sigisuzuk.getenjoyment.net/zibixexitutatipozojif.pdf
    • http://vopagokiniki.mypressonline.com/ascaris_life_cycle.pdf
    • http://malespw.xyz/lagifofalerulojeduzimeruuq28y.pdf
    • http://meinekarten.best/android_phone_reviews_20182bzm5.pdf
    • http://thepropheticapp.com/513339468rn0yh.pdf
    • https://wotuterivakevom.weebly.com/uploads/1/3/4/6/134608936/gotoveb.pdf
    • https://digafixi.weebly.com/uploads/1/3/0/7/130776371/mamugejilutura_fiboge.pdf
    • https://kuwodugedo.weebly.com/uploads/1/3/0/7/130739904/soxatobojef.pdf
    • https://wuvozova.weebly.com/uploads/1/3/4/5/134500004/9338420.pdf
    • https://bowonalixatan.weebly.com/uploads/1/3/5/3/135347428/5579976.pdf
    • http://llloooodddd.space/60167079444ffqei.pdf
    • http://prostotit.site/blade_runner_parents_guide_2017ux61c.pdf
    • http://kukushka.space/kaxogutipibubufsog.pdf
    • http://dutarotanazosuv.medianewsonline.com/how_to_chop_samples_in_garageband_ios.pdf
    • https://metoxuxiduwano.weebly.com/uploads/1/3/1/6/131636764/e07dbd26a.pdf
    • https://wigeludob.weebly.com/uploads/1/3/1/6/131636858/defotifodedomotuno.pdf
    • http://cardioactiveufficiale.site/58406599029nofmu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://2ea3657d-1c4c-40dd-8491-58aeeb8dc933.filesusr.com/ugd/18a85a_71e60129d6434ecbbe2aa855aa47a8af.pdf?index=true
    • https://4e33067b-0f13-4bed-bb9c-ea95f768fd7c.filesusr.com/ugd/23924c_0b03d30cbfec42b1957776cbf9c042d7.pdf?index=true
    • https://be1d055c-b83b-422e-9e68-1bf13cef350c.filesusr.com/ugd/5b1e3c_9b1dbdddfe4f4bfba2b447a250e18ed9.pdf?index=true
    • https://044e8d80-c429-4a1f-820d-9b443c65b389.filesusr.com/ugd/53c654_bb0cd2ee9dc644f3b0a56fd7aad0b47b.pdf?index=true
    • https://ed8bc375-cd54-49ab-9ddb-988cb5b2fc3d.filesusr.com/ugd/3f3824_7a4332eff33e4175bc80b6ffcf55d6ec.pdf?index=true
    • http://fojosotum.myartsonline.com/bowers_wilkins_zeppelin_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6fd.bin
d3682bd671f07b6571c761503af361b3f8b67fbfe9cb1f6371bc76fd9907c25b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FD 5480 bytes
font_01_sfnt_off0000e9b1.bin
82132153b8fd39d06ecb30ccea8ea3d1ec48b8d94df4d0a1a1284749c01e9fec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B1 9964 bytes

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