Malicious PDF — malware analysis report

Static analysis result for SHA-256 002de89003efbcba…

MALICIOUS

PDF

41.0 KB Created: 2020-08-09 18:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca1be8b9e2dd2a13992c8d1ce7eb873d SHA-1: 58ba5513d5dcbd37c5e19283752b8ae3fc893800 SHA-256: 002de89003efbcba128b7f568a041327acf2f6d111e1867a0bf5713c1b30a144
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=learn+boogie+woogie+piano+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of many other PDF links, some pointing to potentially compromised Shopify domains, further supports a link-farming or redirection-based attack. No scripts were extracted, and the primary malicious activity appears to be redirection.

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=learn+boogie+woogie+piano+pdf
    • http://lazipepiw.inovamedtech.com/uploads/1/3/1/4/131483492/c9ebf98af6.pdf
    • http://files.aclwolfpack.com/uploads/1/3/0/7/130775813/4a59bd571a082.pdf
    • http://files.montclairpsychicschool.com/uploads/1/3/1/4/131406684/4794802.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3862/9270/files/48233139006.pdf
    • https://cdn.shopify.com/s/files/1/0428/9092/0099/files/juvuroporaninuniwobavob.pdf
    • https://cdn.shopify.com/s/files/1/0438/8506/8456/files/convert_kindle_cloud_reader_book_to.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/3863402502.pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/9689441806.pdf
    • https://cdn.shopify.com/s/files/1/0429/1333/3411/files/9241108349.pdf
    • https://cdn.shopify.com/s/files/1/0428/9950/5311/files/63380564799.pdf
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/pekima.pdf
    • https://cdn.shopify.com/s/files/1/0432/1578/2048/files/rituel_simple_pour_attirer_l_argent.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/44847471300.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/lemaberidemi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2699/7663/files/kobasug.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_off000062d5.bin
a1e011d5a18095d0ad8350bd41b27b90ce7566a0bb5211bc2da56088a378689d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D5 5172 bytes
font_01_sfnt_off00007495.bin
06b72c63d25b448be81f9461dac253ad05ba07abc7b449b7925d9f67247a063d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7495 10224 bytes

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