Malicious PDF — malware analysis report

Static analysis result for SHA-256 43309b493f8af22d…

MALICIOUS

PDF

47.9 KB Created: 2020-08-31 00:55:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb655cd6bb96f66caced15eab80ebba8 SHA-1: a8c70d3864e12d234e942f74d144b252f29fa827 SHA-256: 43309b493f8af22d1c7c92b76e7dbd6c9000e21538cbc860aad03883f9bf0a56
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Duality set it off download' and the malicious URL, suggesting a lure to download further content. The ML classifier also 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.me/wix?keyword=duality+set+it+off+download
    • http://files.rarzip.download/655733������������������������������������������������������������������������������������������������Band
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/26789170691.pdf
    • https://cdn.shopify.com/s/files/1/0435/3264/8602/files/parts_of_the_body_worksheet_for_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/7530/4612/files/wwe_raw_thme_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/4834/5500/files/kali_linux_complete_hacking_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/calidad_de_vida_salud.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9759/files/81452338966.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8658/files/jayce_mid_guide_s9.pdf
    • https://cdn.shopify.com/s/files/1/0434/1704/3101/files/8_ball_pool_online_hack.pdf
    • https://cdn.shopify.com/s/files/1/0436/0011/7928/files/understanding_the_linux_kernel_3rd_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/guwogexixokizuxuzaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/lorawomemipawoxazol.pdf
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/76911971428.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f74.bin
85f3c6463f48f92b096a38937e0aedebc75a010cd6724442ea34926a75974af3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F74 4880 bytes
font_01_sfnt_off0000603c.bin
b9c99e2feddc679a4192e2a9d9f3b1ec04f3ac83e0ba43075a5542505c7053bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603C 14428 bytes
font_02_sfnt_off00008d73.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D73 16204 bytes
font_03_sfnt_off0000a2a0.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2A0 4324 bytes

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