Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d6bf0ef27e3a47…

MALICIOUS

PDF

78.0 KB Created: 2021-03-05 04:27:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6e17262c759eb2c70a1f06857e049cca SHA-1: 21b0ba273e4b8561b2461f03b8c9cb3a96156d5d SHA-256: 94d6bf0ef27e3a478c9397280d34acebdbdd6a4066332d22b3ee72071ee1b1a9
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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://fokemale.ru/wix?keyword=alpha+labs+garcinia+shark+tank PDF link annotation
    • https://pexulowiseguwuz.weebly.com/uploads/1/3/4/3/134391342/7364699.pdfIn PDF document text
    • http://bridgecommerce.com/fowigajiguranarijejaninvhgo1.pdfIn PDF document text
    • http://atomyimperial.ru/jidosapijanowakovoluvo9vh58.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/60201bbf4139.pdfIn PDF document text
    • https://cdn.sqhk.co/dakagugi/ezieuaJ/28955172555.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/cmo_reparar_el_error_de_comprobaci7bt8f.pdfIn PDF document text
    • http://adachivia.store/17193689176asfo4.pdfIn PDF document text
    • https://cdn.sqhk.co/doxelatofon/IiMJEig/narajofagonazuvotixujes.pdfIn PDF document text
    • https://pobexapuze.weebly.com/uploads/1/3/0/7/130740180/112983.pdfIn PDF document text
    • https://lekusimije.weebly.com/uploads/1/3/1/3/131383821/tonapu.pdfIn PDF document text
    • http://gladkoe-telo.xyz/how_to_unlock_iphone_4s_sprint_free_without_sim_card2z19x.pdfIn PDF document text
    • https://cdn.sqhk.co/naludibeg/Fhepidt/1384714208.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/goveruduzewoxu/39515700962.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/vewovalenapanufatebat.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/asure_id_7_with_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/7139260855.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/crazy_train_baritone_sheet_music.pdfIn PDF document text
    • https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_958bfee6ef554993ad7f05ab6dc85170.pdf?index=trueIn PDF document text
    • https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_dff4174c527e45bf9033a92e0b946993.pdf?index=trueIn PDF document text
    • https://0ca3454e-05ac-49fc-8d00-644b1af7be3c.filesusr.com/ugd/8bf3fc_4b6120e2198542259113270300f98264.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/mukepewewamuweda.pdfIn PDF document text
    • https://8909b315-4d59-4940-aabf-0fdaa532e0ad.filesusr.com/ugd/4542d9_7d72536d00734f428830fa3ab00f7912.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/63859906950.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_off0000f1ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EF 5388 bytes
SHA-256: 00e7090afd162be4ee49ce12812dd7b2793190f3460e8669addc4b5b37f3790b
font_01_sfnt_off00010438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10438 11248 bytes
SHA-256: 453ed88de3fa6cdf475a93a653ea243782e2c4ac739d7342bffb6c985b40d086

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