Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d715b675707036…

MALICIOUS

PDF

39.2 KB Created: 2020-08-24 12:47:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ab4b185f1024201377ef52828a8855f SHA-1: f215a5ba9549ba42dd17cc00ec0ef48ba2f778cd SHA-256: 00d715b67570703654967abdbad4abd5b8c26ef01c6700dfcc7a864b70d12791
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=bleach+vs+naruto+android+apk'. The presence of a 'download button' heuristic and the document body content related to popular media suggests a lure to trick users into clicking the malicious link. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=bleach+vs+naruto+android+apk
    • http://vavufubu.yeppoonjunglegym.com/uploads/1/3/1/4/131407995/pujamopulilib.pdf
    • http://medoj.pjmouse.com/uploads/1/3/1/0/131069992/9379752.pdf
    • http://fitip.nhdreconstruction.org/uploads/1/3/1/0/131069759/7741594.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/1519/0181/files/honeywell_pro3000_access_control.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/saxivopojegozo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9456/4252/files/pmbok_6th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/vosatepupudere.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7816/files/gerowebewogazusejigevub.pdf
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/takexazudigunujadu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/information_of_aerial_stem_modifications.pdf
    • https://cdn.shopify.com/s/files/1/0438/0416/4256/files/6837186054.pdf
    • https://cdn.shopify.com/s/files/1/0435/6423/6968/files/jose_peppers_menu_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/40521236071.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c23.bin
c3b22ff9205f33668bab56b6ede731f295c5f6bfefd8e30b615624e3270ede85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C23 5336 bytes
font_01_sfnt_off00006e35.bin
50e15336ec7f3d139c165e8e3dbbca7d9a82593a3cf7f3243ccfb3720eca3645		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E35 9900 bytes

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