Malicious PDF — malware analysis report

Static analysis result for SHA-256 fff62e950e5787be…

MALICIOUS

PDF

75.3 KB Created: 2021-02-14 09:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 49bd3f5cc80614677d34a5659c558e48 SHA-1: bccb25a80d4383a0878f4f815451fd25c44861b4 SHA-256: fff62e950e5787bef5f54b104cf6b9bcf388d150b831fdbc2d740fc7ca35ffe0
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 0.9998

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://seumenha.ru/wix?keyword=onkyo+tx-8020+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446633/normal_5fd3c09cb4e2d.pdfIn PDF document text
    • https://mugebixivezir.weebly.com/uploads/1/3/1/4/131484268/belanodirudipimito.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487197/normal_5fd7061cbc9d4.pdfIn PDF document text
    • https://jakikoxu.weebly.com/uploads/1/3/1/4/131411542/saburijij-vilolamisi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375210/normal_6002558c0f72a.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
    • http://wowelotiti.epizy.com/82427930784.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/guzutovimi.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/payback_game_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/texoluxufalufakepasofero.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/vivelo_beginning_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/bajrang_dal_song_djking.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/zarchiver_apk_for_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/47190072663.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/tesoxakikaxajulo.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/sample_accomplishment_report_in_mapeh.pdfIn PDF document text
    • http://zunedolu.rf.gd/48588585805.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/auditor_general_bursary_application_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/42422606929.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/hunger_games_free_ebook.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_off0000dcd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD2 4960 bytes
SHA-256: a2580f2d7af4e8c0ba3c83eaf13de594f9b7dba6bd8ba2b254a5c01e402a1e40
font_01_sfnt_off0000ede3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE3 10492 bytes
SHA-256: 75322f416d7b932f368d6572d6824dea17947d0b24c7c6b533743cfc3aadb93c
font_02_sfnt_off000111cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111CD 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.