Malicious PDF — malware analysis report

Static analysis result for SHA-256 cedc3301c4ae393c…

MALICIOUS

PDF

33.1 KB Created: 2020-08-28 10:19:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10f344fcdcf76ef286fbe6dd52cab6e9 SHA-1: ad7c807c03d6e9a5376352f89eadca2403334ea8 SHA-256: cedc3301c4ae393c1e169dd8d6728e6cf6822650b4a29d41ca6267604831945e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=playboy+bunny+images+png'. The document body, though heavily obfuscated, contains this URL and references 'Playboy bunny images png', suggesting a lure to entice users to click the malicious link. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports a malicious intent, likely to redirect users to a phishing or malware distribution site.

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.ru/pify?keyword=playboy+bunny+images+png
    • http://gugedowu.fitnesssavage.com/uploads/1/3/0/7/130776257/2ebaa3b.pdf
    • http://files.kd-photography.com/uploads/1/3/0/8/130814515/9272387.pdf
    • http://bekakik.bodypercussionclassroom.com/uploads/1/3/0/7/130775085/5dd480d3e0cf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/1619/2153/files/84329693124.pdf
    • https://cdn.shopify.com/s/files/1/0435/5306/3063/files/nogizeverezimezojopifo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/pakotenabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1970/6279/files/how_to_write_application_letter_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/best_vocabulary_words_for_ielts.pdf
    • https://cdn.shopify.com/s/files/1/0440/9583/2216/files/acciones_bursatiles.pdf
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/christian_theology_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/measures_of_dispersion_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0008/files/goldman_sachs_blockchain_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/8309/4434/files/72630308820.pdf
    • https://cdn.shopify.com/s/files/1/0465/5126/9526/files/badshah_movie_songs_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/free_candy_camera_new_version.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047a7.bin
b920ce16904604057e4a422527425a55062bf57a219eb212546cdf784d28581d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47A7 5288 bytes
font_01_sfnt_off00005999.bin
a5346bb47503bba97028f579fa0b564e277c77ad676482ca2b29451c5def4c37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5999 8864 bytes

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