Malicious PDF — malware analysis report

Static analysis result for SHA-256 39f9e9466fee66a9…

MALICIOUS

PDF

74.4 KB Created: 2020-12-25 20:19:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: ef9e0af85902437a10c72391e7784e7b SHA-1: fe3ded29eae8767dfc57245b555fbf1098a0f0ff SHA-256: 39f9e9466fee66a94e71f35aa7cb3918e43ead2f9f37617665d1fa81945b2902
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious website.

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
  • 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://trafftec.ru/aws?utm_term=king+single+bed+sheets+for+sale PDF link annotation
    • https://cdn.sqhk.co/zofukumane/UggVdii/splash_lagoon_prices_military_discount.pdfIn PDF document text
    • https://gugozakeku.weebly.com/uploads/1/3/4/5/134588211/xoxajakewowuf.pdfIn PDF document text
    • https://revugegan.weebly.com/uploads/1/3/4/6/134682990/a96308126.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a817b42-bda6-4499-8122-eb9de4d14cf9/what_does_aqua_affinity_do_on_a_helmet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89a09bdc-0b74-4936-8ed6-06886ca04c34/93269638020.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/46334294315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b860403a-01d7-487e-a54d-c2dc750fcfb6/neutrogena_foot_cream_walmart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55e42965-6068-4547-8459-903bd4a31196/woramere.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/mapevudobazepibawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0716b7d8-ef36-493a-87c5-661d213c366f/related_rates_problems_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67d995e1-aceb-481d-bd2c-6ee7a6387430/gikikewowo.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/35160148726.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/mp4_video_er_site.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_off0000e57b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57B 5276 bytes
SHA-256: 18f32cf0e670ca9aca2e68371f37c776a9f140f088134ba592be4c79a7a121fb
font_01_sfnt_off0000f76c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76C 11024 bytes
SHA-256: 8c2791dbaa1d835871c0c9c3531352a39cfcf3c5407f5e727cca6bed4693a0a8