Malicious PDF — malware analysis report

Static analysis result for SHA-256 e650cc7d3828c17b…

MALICIOUS

PDF

95.4 KB Created: 2020-11-01 04:41:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: dfe5a37a737cd80aee34b1d4cb1c5ba5 SHA-1: 5d03b9d2b067e272f48e7410680fb930b4abc645 SHA-256: e650cc7d3828c17b3f581671c38081b96e446d06e3af317e48a6db7656d4a797
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is disguised within the document body as information about a movie. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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://ttraff.club/123?keyword=aladdin+2019+release+date+uk In PDF document text
    • https://xosotujusosevo.weebly.com/uploads/1/3/4/3/134377620/1789811.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370097/normal_5f8e485a5b9c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f9bc46c315af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5f9bc17562944.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387571/normal_5f9bccd4d4fe2.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://cdn.shopify.com/s/files/1/0502/8354/4772/files/xireboxuvufujuxaror.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/disifaweseberel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34148729-f197-4588-bb1a-fa4c632f171e/wusejiwisusamurenogogusol.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/pexirogofujak.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/amnicon_falls_state_park.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3525/7753/files/jomifemekotikejudin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/0678/4183/files/69101571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9377/7312/files/mile_run_time_percentile.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE86 4936 bytes
SHA-256: 6edc4eb157f0379eea4b08765ddacc0a21be6b101b9d56856a715f3cc72a6be5
font_01_sfnt_off00011020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11020 5128 bytes
SHA-256: a691e4c1d76a4b390397ed0614892aee59692ff5d127dd14f58165a89885f5e4
font_02_sfnt_off00012191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12191 13500 bytes
SHA-256: cc5abec84a65e1a2a06c2e8e0d406da7ddde75b06f79b9b2257a6f08a1d59e4d
font_03_sfnt_off00014cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CAD 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_04_sfnt_off000161c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161C2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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