Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52f48fc096602f0…

MALICIOUS

PDF

63.9 KB Created: 2020-12-04 14:14:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: eed621b4defaefdcaf2dccfde74044c4 SHA-1: d314f70bdb689b40972a8f04542a0edd7975a3d7 SHA-256: f52f48fc096602f0a33a5e0e7d90318a4f282755dbfb543a096ab6a37da71a40
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL indicates an attempt to lure the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ggtraff.ru/aws?utm_term=del+monte+beach+surf+report In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f8e43f46945d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/cute_baby_message_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/nebapefolalame.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/candy_that_starts_with_letter_d.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1945f2bbd7406580b5c60/t/5fc993d4414f5e3523728ad4/1607046102274/50237730123.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e0f3f7cf8c75402ad020/t/5fc18d23e6d49a06bbcd5c90/1606520099858/wood_slices_for_sale_12_inch.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/44104723785.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e70d1452f90b7fe56088/t/5fc77bf809f4d56e8f871e2f/1606908920026/39257453826.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6fe89778af068263bdf77/t/5fc7a9e993ad1a4812238e7e/1606920681381/go_tractor_game.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc296788787e8798976c150/t/5fc96ac728e47b5d5024a5ff/1607035592614/marvel_unlimited_cancel_free_trial.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf52deaf37e3b64613ccc/1606284589558/everstar_portable_air_conditioner_mpm2-10cr-bb6.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dda511f6a41984857aa8/t/5fc2359b7acac6192a0a76e2/1606563230512/vekodakitobikuduxusefab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24c07449-945c-4205-b224-ac2dff11f0f2/atlas_copco_ga_55_air_compressor_maintenance_manual.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_off0000bd65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD65 5396 bytes
SHA-256: fe34cc79abbd463ea89dd98e356412ae5800a15139a6b1180fc712aee3c4815c
font_01_sfnt_off0000cf8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8F 10588 bytes
SHA-256: 9cb5dd0372c64591dbe248eab42c5ea0181d875f9ea4ed8a379e59747312b018

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