Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c96702e32cf5be…

MALICIOUS

PDF

77.7 KB Created: 2021-01-25 08:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c0a2f3c4c2d22ccd0b55c9b30753e7ae SHA-1: c99c65cf762b20182e0767f3eaf385e82c8672f4 SHA-256: e1c96702e32cf5bef04455dc1142ffd8a5c9c5f411ef543a6e79f8ce44ba4057
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=computer+all+parts+name+list+pdf'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/aws?utm_term=computer+all+parts+name+list+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zevofelajasuz.epizy.com/half_quarter_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/homograph_and_homonym_worksheets.pdfIn PDF document text
    • http://dakokaxawizepu.epizy.com/cinema_paradiso_violin_sheet_music.pdfIn PDF document text
    • http://bogurivesinoni.rf.gd/antidoto_araa_violinista.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/79307812793.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/heroes_of_the_storm_junkrat_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/vertices_of_3d_shapes_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/hungry_shark_2019_apk_hack.pdfIn PDF document text
    • http://leruxesotagas.rf.gd/dotusumuzamiminikirulu.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/sowpods_scrabble_dictionary_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/61342520102.pdfIn PDF document text
    • http://mizozibobekujul.rf.gd/13605870520.pdfIn PDF document text
    • http://galiwasik.rf.gd/eine_kleine_nachtmusik_sheet_music_string_quartet.pdfIn PDF document text
    • http://latowetutut.epizy.com/bikenavixonimi.pdfIn PDF document text
    • http://jepisaf.epizy.com/hallelujah_sheet_music_choir_free.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/worevefobomujirub.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/nekorefakaguxew.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_off0000f297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF297 5092 bytes
SHA-256: a9c36f8dff7db9dae7f37849f53456add3d541d37d84c64a5fa07c85582b8d3b
font_01_sfnt_off000103c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C5 11228 bytes
SHA-256: 56648c4efd4ce5ceafa596420c4fc6b89b85e4bcf9cd623a5c09ae8919c21353

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