Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ecc4f0475bcc02…

MALICIOUS

PDF

86.2 KB Created: 2021-03-07 04:15:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e06d7e2f755c93a1c10cda062091f986 SHA-1: 16563a002da85abcfe5331815680faa557ae4e70 SHA-256: e1ecc4f0475bcc024fc444c91c66bf0b1e9f58bdee8f216e26d8bbbd9fc19284
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=reality+xp+gtn+650+manual PDF link annotation
    • http://boost-shop.xyz/what_are_the_rules_for_high_school_softballtghkr.pdfIn PDF document text
    • https://sirukume.weebly.com/uploads/1/3/0/8/130814715/1877690.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414687/normal_6003f6c896c77.pdfIn PDF document text
    • http://new-volosi.ru/226349818001c0w1.pdfIn PDF document text
    • https://nugakiru.weebly.com/uploads/1/3/6/0/136050310/tubokudigetabe.pdfIn PDF document text
    • https://gonotelavekufuf.weebly.com/uploads/1/3/4/6/134615299/4772002.pdfIn PDF document text
    • https://kesozelakix.weebly.com/uploads/1/3/5/3/135300748/xipezunepa_vivud_nedorawidide_jutuvajowat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380084/normal_5fd761f87c474.pdfIn PDF document text
    • https://nazoturifebigik.weebly.com/uploads/1/3/1/6/131606271/janijipugorapupi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476938/normal_600c983982b8a.pdfIn PDF document text
    • https://jofufibiwew.weebly.com/uploads/1/3/5/3/135347649/wanoxuganavub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370078/normal_5ff0639a679ed.pdfIn PDF document text
    • https://magijomolalol.weebly.com/uploads/1/3/1/4/131437319/zevasobutadax.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://s3.amazonaws.com/pululusodogi/bloody_roar_ps1.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/fasomeravewenoguz.pdfIn PDF document text
    • https://b133b025-67d1-4190-9e53-fbb99503dec2.filesusr.com/ugd/caf13f_2bf877a1e1254ea7912cb0c43a609de5.pdf?index=trueIn PDF document text
    • https://4993f9ff-345c-4c03-a8ec-d4f8dac664d6.filesusr.com/ugd/debbe1_409f9483521347139746faced830e500.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/poresi/alkaline_herbal_medicine_book.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/18913599484.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/jidixurovuja.pdfIn PDF document text
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_d19ed0161fbe4ba592d8bfdd25af644b.pdf?index=trueIn 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_off000107ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107BA 5236 bytes
SHA-256: 10fbfeec15d96ad44fe133e2a15293cba043c9c077f7bb81532093b5c76a2529
font_01_sfnt_off00011984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11984 10356 bytes
SHA-256: 239610ec6464315347ddc0ef78ae1adaf54fc32284bb192f39c8211967c95fbe
font_02_sfnt_off00013d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D0C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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