Malicious PDF — malware analysis report

Static analysis result for SHA-256 652f7f653129ef02…

MALICIOUS

PDF

32.9 KB Created: 2020-09-07 20:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a054c20c2da45c3fb0474b64dab158d SHA-1: 1ab5a22c62c81835fe6f000ba45d65c2e7070b6b SHA-256: 652f7f653129ef0299874248ed5a10633641957dd6b0c347f1399c47a46e1fd2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external resources, suggesting a link farm or SEO poisoning attempt. One of the primary links, 'https://ttraff.link/wix?keyword=adventures+of+aladdin+full+movie', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to 'Adventures of aladdin full movie' and the authoring application 'wkhtmltopdf', indicating a lure to potentially malicious content.

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.link/wix?keyword=adventures+of+aladdin+full+movie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/5b9a87_aa14b135548d4d1da001d7350b16b601.pdf
    • https://static.usrfiles.com/ugd/cf79db_b3b43f992c6d406fb91b5c914e8704a0.pdf
    • https://static.usrfiles.com/ugd/84a5c6_008c46ae5a724d128b8f9ad6cf191e24.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8102/files/tinker_tailor_soldier_spy_novel.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/37889194440.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/css_drop_shadow_generator.pdf
    • https://cdn.shopify.com/s/files/1/0443/0469/5452/files/microcytic_hypochromic_anemia.pdf
    • https://cdn.shopify.com/s/files/1/0438/4181/4693/files/tamil_yearly_calendar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/print_in_c.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_off000042a8.bin
c3c6db28bc476edeb7fdd7edd145d29930d6ae5bdcae24401ece6a9dedccf271		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42A8 5104 bytes
font_01_sfnt_off000053f4.bin
72968b14a9dad5a7be0fb30159a67f83c2a4720307436877c9170e03d0c357fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F4 10308 bytes

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