Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fea04b7eda4b509…

MALICIOUS

PDF

43.1 KB Created: 2020-10-26 20:01:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: cbbf572e2826c9f0bb539d20971dd1ba SHA-1: bafba6e52eacef5aa1b143a17baf2686c5ebacbb SHA-256: 9fea04b7eda4b5097964ea93b1cf7ea8bdfd6773610223e48237b9c818ad6c83
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 'https://ggtraff.ru/123?keyword=uhaul+test+answers'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document body indicates an attempt to lure the user to a potentially harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/123?keyword=uhaul+test+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393346/normal_5f92afb6e6428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368494/normal_5f8ec1a6e19de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379968/normal_5f9467085b8df.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/tesotiwapax/mokuropumugefotonogiso.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/begofodibolazegopej.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/8128017744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0127/2229/files/darizamudelugadizivexama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6325/3409/files/bosch_table_saw_ts3000_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/61666996250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0857/3607/files/olla_express_ecko_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1518/3777/files/jitunewagokoxulup.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/arguments_against_euthanasia.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/15777964011.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/nijitaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fbb76c6-b4d9-4cc0-aee0-e5f89ca33b3a/tetifivafuwelewikojumefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e8478c6-3518-43f8-8b34-c0f4cd5d3565/forever_sensei_bsg_song.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_off0000674d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674D 4856 bytes
SHA-256: 0198d0066e0744c981192843067e87befcfe66da11ccdadbb49b1ba392bd55b9
font_01_sfnt_off000077d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D9 11696 bytes
SHA-256: f531d33c50ac5d978e97f98ad69a462b5e0af21d659306c2295eb1a927f76b44

Open this report in the interactive analyzer, or submit your own file for analysis.