Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62c78c407a720db…

MALICIOUS

PDF

65.6 KB Created: 2020-11-28 23:09:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7301112ad693314171f9c4ce987d9f40 SHA-1: 0a68845334aaf61f6d861e2c4c1afc91696b8324 SHA-256: b62c78c407a720db2be0d0a73bc64475b40f4b252547f29597f176e4cdd33584
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised with a keyword related to a movie. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://gettraff.ru/wb?keyword=baghban%20movie%20hd In PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/bedujawigo.pdfIn PDF document text
    • https://rixabala.weebly.com/uploads/1/3/4/7/134730828/6549954.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/donarepemi/15326170249.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/iso_to_dvd_bootable_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a19a43-849b-4838-979c-73f86d308873/the_advertising_concept_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/xunafatenumeva.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/sean_mackin_net_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/tropical_birds_desktop_wallpaper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c9a687d-fa82-4c00-9403-324e53a38ea3/ultralight_pro_finalmouse.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/need_for_speed_most_wanted_cracked_key.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/nh_registry_of_deeds_hillsborough_county.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C3 4892 bytes
SHA-256: 5070010fd49eaec177d9fffa4e09c9c8e4de88a4f531fe10db867be0ffae91aa
font_01_sfnt_off0000c42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC42F 11240 bytes
SHA-256: be0689d86a3e6268fdf462bdee36aef8f098275f6c73548cd2d2cc62c79a0935
font_02_sfnt_off0000ea7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7B 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

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