Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa24a0bf59c2b6c…

MALICIOUS

PDF

68.1 KB Created: 2021-03-05 01:28:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e25476675dc7fc9ed5a402bc44bd947e SHA-1: e69b9feabbe386a9103cfa9529ff298300deeca6 SHA-256: aaa24a0bf59c2b6cf48c12c053088dfc5811d4fcdd24d822fc0d5fb089b3b174
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.5593

Heuristics 4

  • 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
  • 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://seumenha.ru/award?keyword=how+do+you+clear+error+codes+on+samsung+refrigerator PDF link annotation
    • http://arendagg.xyz/how_to_make_nuggets_crispy2pq26.pdfIn PDF document text
    • http://svoydvalend.xyz/wojoxubo4un4w.pdfIn PDF document text
    • https://nuwuzeparagagux.weebly.com/uploads/1/3/4/8/134883197/7508725.pdfIn PDF document text
    • http://ilkertr.shop/vomifesixenavilinaferz5t1j.pdfIn PDF document text
    • https://ribimefisele.weebly.com/uploads/1/3/4/5/134516567/efd2d40d1.pdfIn PDF document text
    • http://flipping-car.online/246516997604er4n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470543/normal_6031becc31e00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367294/normal_60038ed353305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380382/normal_5fd33062742c1.pdfIn PDF document text
    • https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/ximeloked_nutifezipuviren_zivevu_zibebenifuf.pdfIn PDF document text
    • https://zinenefubodejig.weebly.com/uploads/1/3/4/3/134338026/3962792.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458840/normal_602abaed6ef7c.pdfIn PDF document text
    • https://vebajixumese.weebly.com/uploads/1/3/4/4/134483039/kekopazatojozasiw.pdfIn PDF document text
    • https://suxapenogabako.weebly.com/uploads/1/3/4/6/134602080/kosolemaxizatotujeto.pdfIn PDF document text
    • https://nixetamusizag.weebly.com/uploads/1/3/0/7/130740210/2327128.pdfIn PDF document text
    • http://all-gopro.com/latirefisawejxd8pn.pdfIn PDF document text
    • https://xidifapub.weebly.com/uploads/1/3/0/8/130873728/8033e10a2179.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/wiremeresegikon/optimal_balance_sheet_structure.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/formal_dresses_nz_stores.pdfIn PDF document text
    • https://4b523d79-2bc6-404f-8e52-0acae4d2cb03.filesusr.com/ugd/fe1b41_a12e42d980e74d119265ba637966b152.pdf?index=trueIn PDF document text
    • https://29ca30ec-7ad4-487f-8637-d2d67f3a323c.filesusr.com/ugd/10b11f_9bd1cfe6914847db9566ab61dac9f188.pdf?index=trueIn PDF document text
    • https://709e7e89-b264-4d73-b757-064736ed86f1.filesusr.com/ugd/f523c3_00d68179c45e4559a6820988c527bc93.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/complication_of_pregnancy_induced_hypertension.pdfIn PDF document text
    • https://6a421494-2577-4416-904f-e17348f56b63.filesusr.com/ugd/85e76a_7257b535fa404ca0a5eef1436ab9c085.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/36303490103.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/why_is_diversity_important_in_technology.pdfIn 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_off0000e0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BD 5496 bytes
SHA-256: ae3fdf6de67ab0176de96bee75511d54b1413b5d8c5c87e245762a011b31f5d5
font_01_sfnt_off0000f371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF371 9876 bytes
SHA-256: 7f79c5ce9ca5c8d2f95f3fec09085d07ef0219ee981a903d7fa486876791437e

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