Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0586b2fbaefc967…

MALICIOUS

PDF

54.6 KB Created: 2020-08-21 01:58:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12350bb4302be668ce02c3d5b8824183 SHA-1: 756386472e327d279dd282d843e45f59e86ded05 SHA-256: c0586b2fbaefc967c101cbc815e27d4e9898d20b54b8d90bb48e4b434ba1549c
152 Risk Score

Malware Insights

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

The PDF contains a link farm designed to direct users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL 'https://ttraff.cc/pify?keyword=aastha+movie++free' is a clear indicator of a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=aastha+movie++free
    • http://simanimu.taylorsvilagboutique.com/uploads/1/3/1/3/131398140/pewusijizub.pdf
    • http://files.stpaulsboxhillfish.com/uploads/1/3/1/4/131454850/wogubunozevefofunu.pdf
    • http://files.openstarmaths.org/uploads/1/3/1/4/131406885/1175481.pdf
    • http://files.thefeltfactory.co.nz/uploads/1/3/0/7/130776841/xizixexa-dajawotubep-fekifomidele.pdf
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/isometric_drawing_paper_a4.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/27187461856.pdf
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/kaypacha_report_september_2019.pdf
    • https://cdn.shopify.com/s/files/1/0437/3171/4202/files/kekosujatozivosanoxeze.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/ipod_nano_free_games_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/27635913670.pdf
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/bevub.pdf
    • https://cdn.shopify.com/s/files/1/0432/0693/4696/files/88954173580.pdf
    • https://cdn.shopify.com/s/files/1/0438/4355/1392/files/naxami.pdf
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/wosepuvuzisuvema.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdf
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/dazimepamefokirit.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e6f.bin
9bc617b9c5c7d461f30cb25d22e9589af315f6002d5e4615ff81079d9ab28739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6F 4708 bytes
font_01_sfnt_off00007e6e.bin
91fd699cc3e8963cc57663f7294c98a91f988e2619043b7826f2c85a88bfc185		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6E 14452 bytes
font_02_sfnt_off0000ab8c.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB8C 4324 bytes
font_03_sfnt_off0000b98d.bin
27762335bce73f6c7d6ab016aba2c0251accabff6bd758e75b5c25191a5d32ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB98D 4908 bytes

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