Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e648e338ae528af…

MALICIOUS

PDF

70.2 KB Created: 2021-03-31 06:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d27852f0f560b638d49020ea8b4376b3 SHA-1: 56527b50180ed5ff50977789526274b455339d4d SHA-256: 5e648e338ae528af6d0728c1a491f1222ca7a9d1bb980adeeebde52a3783d82f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a site disguised as a game guide. This suggests a phishing or malware distribution attempt. ClamAV and ML classifiers also flagged the file as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, but the presence of many external links, including one with a suspicious domain, strongly suggests the document is designed to redirect users to a malicious site.

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://dugedepap.ru/wix?keyword=love+nikki+dress+up+queen+event+guide PDF link annotation
    • http://zdsshop.top/rcl_3000_lantern_manualffle9.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/faluxebiwodasomad9x0l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421218/normal_5fff773b3daff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375093/normal_6011e10866de9.pdfIn PDF document text
    • http://dashcamtopbest.com/classified_narrative_format_balance_sheetbwiw5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403537/normal_60088da9dba86.pdfIn PDF document text
    • http://8bitbeardsco.com/isma_s_grove_grubxg2u7.pdfIn PDF document text
    • http://cheatyou.site/pasar_de_centimetros_cuadrados_a_pulgadas_cuadradas1o7aw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387219/normal_60014f721e2ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403818/normal_5fe77dfc1fc21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382407/normal_60354de67dd5a.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/zulezov/branches_of_government_worksheet_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/67848097519.pdfIn PDF document text
    • https://0f7a2101-273c-4f7f-b1fd-079d1ad923c1.filesusr.com/ugd/a7ea6f_eedd4760cd424f4794cf0c5e7eeae7b1.pdf?index=trueIn PDF document text
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_4e2c9affa10b422eb64fd604bebe7bc4.pdf?index=trueIn PDF document text
    • https://e8b83640-91e4-44a0-a69f-c2468797902f.filesusr.com/ugd/ee4a13_ab83a43d84e0479397ddadd5a42135cf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zexozavo/mapanuzaserejug.pdfIn PDF document text
    • https://ba3a7bb5-edd2-4228-b29c-cf272df6a868.filesusr.com/ugd/bd1c09_d88b9fc160e24effba31277549a1ea42.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/zukokuwavabidunekeziwe.pdfIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_1698565396354c06a0c52875e04ba586.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dekogamik/gezineb.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/wahl_dog_clippers_not_cutting_well.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/drilling_through_thin_sheet_metal.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_off0000d5bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BB 5076 bytes
SHA-256: 6177d0bfa4fff1e3c918a11ce9ac6953b239ef25f838a994776c61eeb5169612
font_01_sfnt_off0000e716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE716 10600 bytes
SHA-256: 77210cfb8edaeeccb2a9ee3cdd42b06b62119210b8c5c4fcb711aeeca66c3bfb

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