Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2aae2424550444…

MALICIOUS

PDF

84.8 KB Created: 2021-04-16 19:55:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0206b8f2e9d47ac2b92c8a8f0d4b4a1d SHA-1: 580c477b723981129c30e0282f812cd561df4b7b SHA-256: be2aae24245504447249a9a15756a68bfbe69f8cf848805f505118cbd1a2ff1d
156 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 0.9995

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://dafemum.ru/strik?utm_term=cuisinart+bread+maker+cbk-200+pan PDF link annotation
    • http://russianstravel.ru/roluzigitedonitr7wxp.pdfIn PDF document text
    • http://ourfanz.com/draw_sheets_suppliers_south_africa3dk8a.pdfIn PDF document text
    • http://ch-data-2a8fv9s.pw/13159951101oysoc.pdfIn PDF document text
    • http://shop-you.xyz/95862183501bivgf.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/dark_sky_background_hdfe4lw.pdfIn PDF document text
    • http://fruits-summer.fun/body_champ_inversion_table_instruction_manualkcsmz.pdfIn PDF document text
    • http://criticcxck.space/how_to_loom_knit_socksav0kd.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://uploads.strikinglycdn.com/files/f4307196-51d1-4010-a2ef-87afd71b53f3/finite_element_analysis_in_geotechnical_engineering_volume_two_-_application.pdfIn PDF document text
    • https://da89e6ec-52f9-4c28-8de8-447a2e923c0c.filesusr.com/ugd/5e5b2a_7021a9ae6c7541aa83485e39d39bda45.pdf?index=trueIn PDF document text
    • https://87164119-88a6-4d6d-a72f-b109cf2d88b9.filesusr.com/ugd/bd0a66_9950034c0ee9410e8347898785bb8178.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/natowa.pdfIn PDF document text
    • https://413f70bc-0247-4a04-a3fc-eabb14e2b93f.filesusr.com/ugd/f18ee6_a6147586bc84450f8d1b5a9c4c7c9062.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/laxumisufunigo.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/affidavit_in_lieu_of_marriage_certificate_form.pdfIn PDF document text
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_04e6bb4595464fe1b6b4a5d75d422afa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pubopelej/11755941226.pdfIn PDF document text
    • https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_24041080b8664b4f9ed358edfbadfdc1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c89175ad-b154-43e3-9da1-0f11f98ad1cc/how_to_google_search_with_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/86584170173.pdfIn PDF document text
    • https://d62ff7d9-aefc-4ab8-8cdf-af38868aea16.filesusr.com/ugd/54b9a1_d5af103aa28e4302a8cd8fdf37b531fc.pdf?index=trueIn PDF document text
    • https://291e86d0-b4b7-455e-aeca-30cd05102b29.filesusr.com/ugd/384a46_c8db5b543ec94ba3ad4d188539097a42.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fee0eaaf-dc70-4a55-b0b0-44a82d8060d3/lamakudupeji.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_off0000fcf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF1 5492 bytes
SHA-256: 85fc522c61586cacebde77c7194786d0873fb86a41a2c3b245c9fcd89898fb96
font_01_sfnt_off00010f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F88 11336 bytes
SHA-256: 5f445407af737bb627b107044f28e7acd54e4e688fa6ef4b313d6a6fed9c4146
font_02_sfnt_off000135cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135CC 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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