Malicious PDF — malware analysis report

Static analysis result for SHA-256 9faf7a8809816124…

MALICIOUS

PDF

75.1 KB Created: 2021-01-16 03:16:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 63eda3ecbe864236eb43495a43a2744b SHA-1: 16144a2f8361c5db4f9dbbc04b4ada21850a8bf0 SHA-256: 9faf7a8809816124cc69020b91e67b726cb63fb7c6f54da043322b5628cadeae
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to malicious content, likely a phishing page or a further stage payload.

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://traffking.ru/123?utm_term=tekno+dog+instructions In PDF document text
    • https://cdn.sqhk.co/jepivitixiwo/ajihche/fixud.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/19hjhbW/totafe.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/iojhiaz/nubibexorumuvaj.pdfIn PDF document text
    • https://site-1175548.mozfiles.com/files/1175548/tap_builders_warehouse.pdfIn PDF document text
    • https://site-1177349.mozfiles.com/files/1177349/56760114012.pdfIn PDF document text
    • https://site-1168348.mozfiles.com/files/1168348/pamurovibedadumajiluvujox.pdfIn PDF document text
    • https://site-1166042.mozfiles.com/files/1166042/the_crowd_gustave_le_bon.pdfIn PDF document text
    • https://site-1178121.mozfiles.com/files/1178121/65975740241.pdfIn PDF document text
    • https://site-1185743.mozfiles.com/files/1185743/yelawolf_offline_song_2020.pdfIn PDF document text
    • https://site-1208496.mozfiles.com/files/1208496/35903512846.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/hbhaDpD/2274401347.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/ladojenefe/87739379267.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/deadpool_kills_the_marvel_universe_comic.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/77848630532.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/adjustment_of_status_uscis_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/dadedesosu.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_off0000e3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B7 4880 bytes
SHA-256: 63de3a1cec79657de7c4de5998378020b11142672f5fc09b4fe108189ebeb1f1
font_01_sfnt_off0000f46a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46A 13336 bytes
SHA-256: aaffca5f3d424ee7d28211d08fdb356d04b81c1e16d73fd4cb60866c21471c8e

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