Malicious PDF — malware analysis report

Static analysis result for SHA-256 7416fdbe3b9c81ff…

MALICIOUS

PDF

64.3 KB Created: 2021-01-08 09:07:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 56f016a6b2b34eb81204ab8f74c1829c SHA-1: b58f46a797a8fe354e2c26d328c023efb78e02fd SHA-256: 7416fdbe3b9c81ffb67048908502c5165d753e47433100f148cec6b1a8344c6b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, appears to reference a product, suggesting a lure for a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/123?utm_term=hoe+nalu+standup+paddle+board PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368984/normal_5fcbf03935f79.pdfIn PDF document text
    • https://cdn.sqhk.co/dexavoba/hihi0hc/41141288813.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/idrhcps/naia_national_championship_football_game_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/lukavago/ifmQgiX/color_shift_wrap_avery.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/hS2gfhc/jaxatebokasodibebaworu.pdfIn PDF document text
    • https://cdn.sqhk.co/fifapupifig/SQ2qthc/how_to_tie_double_hook_fishing_knots.pdfIn PDF document text
    • https://cdn.sqhk.co/kulizuxekume/qYYejik/71083751906.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/5730b196-bb87-427c-8984-1427829113dc/67978838482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6335b090-a74f-4dd4-8bea-5824cc83f48b/fotoxol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00905373-b99d-45ce-a1e4-b4d4af5d30d4/78587355759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02d33b79-33e4-42fd-a41d-429c0352fcea/csr_racing_2_hacked.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/26552704058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f2a4376-4d8b-476a-87a3-f08ba7c78ef1/fekura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73af8491-3e16-489c-81d4-a319ee18b889/10792350696.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_off0000c050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC050 5052 bytes
SHA-256: 70cda26349703e2059dbdc3cdae46b9761475b145c94dc7c61b9e6d0c4f224d6
font_01_sfnt_off0000d17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17B 10296 bytes
SHA-256: 8157e54f57b671c9bc381b0d534656ec3f927cd0f12baa2185a2ee7daee4dca3