Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca3601ce09f294e…

MALICIOUS

PDF

39.9 KB Created: 2020-08-14 11:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec83e7b70007fde8a007380c6da321a9 SHA-1: 61e5e98030e2df2761cfd40ca60ad30b169c09e4 SHA-256: 9ca3601ce09f294edca8e157b932b64079216071b005facae7b93c6102bd8f6e
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The document body contains text that appears to be a lure, 'Eagle images hd 1080p', and the malicious URL is also present in the document body, suggesting an attempt to trick the user into clicking it. The presence of a link farm further indicates malicious intent.

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.com/pify?keyword=eagle+images+hd+1080p
    • http://files.miamidogshow.org/uploads/1/3/0/8/130814226/wekedejekodevulo.pdf
    • http://files.beyondprocess.com/uploads/1/3/0/8/130814132/kazogepofikor-barexofudanemum-nudadigusejipe-fekarelobolow.pdf
    • http://files.pagesofmypinkdiary.com/uploads/1/3/0/8/130814227/norozetok-serobufuwujig-pudura-fenoko.pdf
    • http://files.vandalismstudios.com/uploads/1/3/1/1/131164199/f9cc8b3fbaef.pdf
    • http://files.daniellewisarchitect.com/uploads/1/3/1/3/131398605/dajud.pdf
    • https://cdn.shopify.com/s/files/1/0438/0763/7661/files/64370248443.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/gejaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1815/7221/files/understanding_comics_scott_mccloud.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/rs3_magic_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/4977118149.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/13401869709.pdf
    • https://cdn.shopify.com/s/files/1/0437/3859/5482/files/xovozolukesana.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/discord_code_markup.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/78923216857.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1929/files/27484503557.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakawefefaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/sogevi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a5a.bin
61b088eacb33399ac4fc7ba102976e3ab10e9ee707d6f0972743ca00b696c252		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A5A 5620 bytes
font_01_sfnt_off00005d5c.bin
5bc7b2cebad241debb810f584dd9b0fbf4aeb7f96f4e8623b174d5f49f034485		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5C 9316 bytes
font_02_sfnt_off00007d48.bin
d781c508aaf473e50263a6aabc3f4161b7fa10724c54bb8d35addee38a7f1c44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D48 16164 bytes

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