Malicious PDF — malware analysis report

Static analysis result for SHA-256 073ac85e64030b97…

MALICIOUS

PDF

61.3 KB Created: 2020-08-13 22:10:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d20e1140071db6d828c40c5ea941b048 SHA-1: fe299e363447385a20277c9549116c9d8660173c SHA-256: 073ac85e64030b9792aee8b18e3535f6de2f1b57da20d2a5af0387257a7c7063
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting PDF files, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=ufo+vpn+android+4.+4.+4'. The document body, though heavily obfuscated, contains this same URL, indicating the primary intent is to redirect the user to malicious content. No scripts were extracted, but the presence of embedded URLs and the redirector link strongly suggest a phishing or redirection attack.

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=ufo+vpn+android+4.+4.+4
    • http://sijibi.contractgovernmentservices.com/uploads/1/3/0/8/130814328/f24a00f7a.pdf
    • http://megoseveg.mgservicesltd.com/uploads/1/3/2/7/132741555/6654622.pdf
    • http://files.boavitnutrition.com/uploads/1/3/1/4/131408353/rowirozi.pdf
    • http://files.perfectlayout.co.uk/uploads/1/3/1/6/131606069/mojovoferopudibo.pdf
    • http://momuroz.cynthiasnewell.com/uploads/1/3/2/6/132682076/sazegudako.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/c_append_int_to_string.pdf
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/82095162557.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/tomato_asus_rt_n66u.pdf
    • https://cdn.shopify.com/s/files/1/0433/7526/3909/files/legatupadenepi.pdf
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/mimekirex.pdf
    • https://cdn.shopify.com/s/files/1/0440/6929/0149/files/pulekejafesatukixibizuzi.pdf
    • https://cdn.shopify.com/s/files/1/0439/4939/2030/files/78554482336.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/46615107152.pdf
    • https://cdn.shopify.com/s/files/1/0433/4108/6888/files/fikiwegitazunek.pdf
    • https://cdn.shopify.com/s/files/1/0438/6498/1664/files/san_fermo_ballard.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/nuwezipiraxanetunazinemi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096e8.bin
b7b260ddf4d191b6a327e24a8ce6e5bade73ba5b9f71a273ff02e8128d3bb49a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96E8 2900 bytes
font_01_sfnt_off0000a144.bin
6d35ce6e83be70bfc688776563926217c7836e3abeada4cd9d35b0c3b2634762		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA144 4996 bytes
font_02_sfnt_off0000b262.bin
d453ef348cfa702383b3d8a68f1ae63d8804734da34bf24b7926a314dab82bbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB262 1968 bytes
font_03_sfnt_off0000bbab.bin
7d68e197b378771810df0b119fe5f8dfe6270306072182cd84146fa355a1d8b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBAB 14220 bytes

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