Malicious PDF — malware analysis report

Static analysis result for SHA-256 7180fcb91d2a03da…

MALICIOUS

PDF

39.5 KB Created: 2020-08-24 05:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4970759cf6a31846142722bc56e733f2 SHA-1: ca90e789959f2576f881b8e0062ef73f810e375f SHA-256: 7180fcb91d2a03da4e04c76d2ac858e9e02062b89aea26d4371dffa961af46d8
154 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=auto+sum+in+google+sheets'. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on Shopify. The presence of a link farm and a malicious redirector indicates an attempt to lead users to potentially harmful content, likely for phishing or malware distribution.

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=auto+sum+in+google+sheets
    • http://files.alleylouisville.com/uploads/1/3/1/3/131398260/0bdde.pdf
    • http://talet.aartsmith.com/uploads/1/3/1/0/131069934/kuzoverawu_batabuso.pdf
    • http://pijiwizer.thebestenglishforyou.com/uploads/1/3/0/8/130874633/bavatibafosojabufif.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/5558/6203/files/793118620.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/vewemazovufezonomovesamu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/outlook_free_2013.pdf
    • https://cdn.shopify.com/s/files/1/0440/4707/3445/files/bubogilejasosunipoxenatij.pdf
    • https://cdn.shopify.com/s/files/1/0434/4610/8312/files/tutipulowogezo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0663/files/jemikazipuke.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/88987316949.pdf
    • https://cdn.shopify.com/s/files/1/0429/4764/1511/files/nativogovadagulasi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/kuxoxarimigabozisasud.pdf
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/rukigetojavufuduzegapot.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6150/files/zexexakijisusowiri.pdf
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/39519284283.pdf
    • https://cdn.shopify.com/s/files/1/0436/2246/5699/files/75701781462.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_off00005d9a.bin
bfc24cf7260fb57dca61a29a2b5132ebb6bcb822441a86b2b60d31e01abec9c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9A 4780 bytes
font_01_sfnt_off00006db4.bin
68c09e70146ca9247da1ca8f74686ff5b6aaec26027fa0d0a33803969bb82bd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB4 10424 bytes

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