Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca949fc7d72c1a9…

MALICIOUS

PDF

96.8 KB Created: 2020-12-24 12:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3757850cfda89400e66f6644a89d7544 SHA-1: 231bf4ae10a1dcabf467f050063ac70af45a0e0f SHA-256: 5ca949fc7d72c1a971020dd6b888b70d4a71f05065802ed3d937fb857b14ed27
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://traffine.ru/123?utm_term=olympus+e-m10+2+manual'. ML classification and ClamAV also flagged the file as malicious. The document body, though heavily obfuscated, appears to contain metadata related to the Olympus e-m10 camera, possibly as a lure. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffine.ru/123?utm_term=olympus+e-m10+2+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4447663/normal_5fd7b3c0eaf5a.pdfIn PDF document text
    • https://cdn.sqhk.co/soxemudu/Sihngj1/poughkeepsie_tapes_real_story.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453115/normal_5fd0dc53a2cdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426971/normal_5f9d89ec76a96.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/56393de3-c97f-4486-a1eb-4950878fc76a/9555587414.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/cancion_de_los_dias_de_la_semana_en_espanol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/293d0bf0-89a1-4e09-bc34-3571b470db20/perl_programming_lab_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/viva_video_songs_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8093490b-581f-485c-98fc-e2b86e0e08d5/91_ford_ranger_manual_transmission_fluid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eac2ab3-2e08-4174-bb19-1cf42ea640a3/kendall_county_illinois_appraisal_district.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/algy_majorette_uniforms.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/27714682247.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00014482.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14482 28432 bytes
SHA-256: 0e9702e00f7db160bbb869fbbf018c635c2359b7d0c7595c397a00511a98d9da
font_00_sfnt_off000102ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EE 5356 bytes
SHA-256: 33ab1747aef9a2d79ca9ef62019ae6702e5933cec03bcbb363fabf8f00321e9c
font_01_sfnt_off00011521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11521 15528 bytes
SHA-256: 82e321eb8dc2bd8b68bbcd8713f26e6d09f5d4fa55ea7c301df453efa680618f

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