Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b4460601683f74…

MALICIOUS

PDF

53.9 KB Created: 2020-08-02 01:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33f4d29816838bddb37653d170438178 SHA-1: e91dd6bc1ccd43480860495d89d12f37d8bd36ec SHA-256: 60b4460601683f7464903bea87dfb8f05032331d792485ec880376664ff0bd93
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service designed to obscure the final malicious destination. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=giratina+orgin+form', which is likely part of a link farm or SEO manipulation scheme to distribute malware. The ML classifier strongly indicated maliciousness.

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=giratina+orgin+form
    • http://files.puressecosmetics.com/uploads/1/3/0/7/130739978/pefewojuro_tapudakinifi_dubanagonik_vunejovewetupe.pdf
    • http://files.fsurtc.org/uploads/1/3/1/1/131164199/kutavibezokes.pdf
    • http://files.edutainmentexpress.com/uploads/1/3/1/3/131380558/muduwexenisepop_zipomi_xotitosilisojew.pdf
    • http://files.sailfootyuk.com/uploads/1/3/1/4/131438397/juponeligag_wawotixuta_koxut_xexetijiromod.pdf
    • http://files.marieliterary.com/uploads/1/3/1/4/131483830/wapefisapopekel_resajemerimogik.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0434/1868/1496/files/xamuja.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/4440102210.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7218161301.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/909040323.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdf
    • https://cdn.shopify.com/s/files/1/0429/6677/8009/files/zerabanikopaxip.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6551/files/aa_big_book_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/86991798657.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/54206343543.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4031/files/soxugorodetolunugitoxuluf.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c9a.bin
34113f298df3f5cbbb01a6b10070b5beee4480d51dd44f99e802d97cf94b6675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9A 6772 bytes
font_01_sfnt_off00008384.bin
cddbc4d0472869af2c30fa95fb9c433cc6dba15a80c3da452fd846834ff4c22f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8384 4908 bytes
font_02_sfnt_off0000941d.bin
d0246176c0b90af2f03e48e3e7c1999fda5fc14df1a3ccf2469327529da9cf2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x941D 6436 bytes
font_03_sfnt_off0000a530.bin
48296997cf59969fc27a76ed6e7378acf16bef5a07ae49c4db4973cd872e5305		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA530 10344 bytes

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