Malicious PDF — malware analysis report

Static analysis result for SHA-256 32dde56c47050f2b…

MALICIOUS

PDF

116.6 KB Created: 2020-08-12 12:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8440c6434dc977713ab8672352fa3e7 SHA-1: 3729f7b8ddf722386029ef179e7d7d0e4b664751 SHA-256: 32dde56c47050f2b9981d7453eadf9d9f6d113ad0d89b16894433c4cfe22162f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=alleluia+de+taiz%25C3%25A9+partition+pdf'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm or SEO manipulation tactic to obscure the malicious redirector. No scripts were extracted, and the document body is largely unreadable binary data.

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=alleluia+de+taiz%25C3%25A9+partition+pdf
    • http://files.riataliadesigns.com/uploads/1/3/0/7/130740589/fotaxukuwewibisepox.pdf
    • http://files.thefoodiebiz.com/uploads/1/3/2/7/132740270/dimipemodepisewibek.pdf
    • http://files.agtresources.com/uploads/1/3/1/8/131856072/4490923.pdf
    • http://files.catcatblog.com/uploads/1/3/0/7/130739590/ramoretunadef-netokagoletugez-gopixifexevopap.pdf
    • https://cdn.shopify.com/s/files/1/0431/1711/7589/files/46220901769.pdf
    • https://cdn.shopify.com/s/files/1/0432/3491/8558/files/67686760974.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/jimanodisadakoxasu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/brayton_cycle_problems_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/38365355201.pdf
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/nigawosap.pdf
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/interpersonal_barriers_in_communication.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/vizotulurusijajuxepavuten.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4486/files/un_romance_imperdonable_mary_balogh_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/jutuwuxezezabenotozubos.pdf
    • https://cdn.shopify.com/s/files/1/0429/4246/4166/files/dictionary_entry_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0441/1303/5416/files/gexijuwusadosefunu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0205/2257/files/risultati_serie_a_2020_18.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/vexab.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_off0001650c.bin
8b704042d9ee5b485d99c4b5fecdc612ce050172c953b95e60d02f2288da47e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1650C 5040 bytes
font_01_sfnt_off000175fd.bin
2d29263305d0c4ab0f5816427b4582e65af9d3c298f5343bfd189b907ac2783b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x175FD 19596 bytes
font_02_sfnt_off0001ae1d.bin
5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE1D 16060 bytes

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