Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c30ebe72fd35c6…

MALICIOUS

PDF

38.1 KB Created: 2020-08-07 02:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47d5600d1d938989d9a8044fbddb965e SHA-1: bfe377838bb1f265b71b580d656d982aa454eeff SHA-256: e8c30ebe72fd35c6a5fbcea2bb3bcc21a05b022b8252a1c6ac6139a4a2308578
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-optimized content. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=assembly+language+8086+tutorial+pdf`. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

Heuristics 3

  • 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.
  • 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=assembly+language+8086+tutorial+pdf
    • http://files.laurennicoleanderson.com/uploads/1/3/1/4/131406510/jixeledetowigu_majafuditulejum.pdf
    • http://files.areyoureallybringinghim.com/uploads/1/3/1/4/131406140/begoxiw.pdf
    • http://files.thingsfromthebasement.com/uploads/1/3/1/8/131871850/wowuri.pdf
    • http://files.editmythesis.com.au/uploads/1/3/2/7/132711966/545a96cfa1.pdf
    • http://files.bhcomputers.online/uploads/1/3/0/7/130776088/wilimo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7345/files/11627117200.pdf
    • https://cdn.shopify.com/s/files/1/0440/6480/0918/files/9252712583.pdf
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/magazine_template_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/xogaxuwikexiluvevofuse.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/92596299524.pdf
    • https://cdn.shopify.com/s/files/1/0434/5819/9719/files/define_accounting_software.pdf
    • https://cdn.shopify.com/s/files/1/0438/2703/6322/files/appointment_card_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7670/files/check_your_english_vocabulary_for_ielts.pdf
    • https://cdn.shopify.com/s/files/1/0441/2522/5112/files/10867811066.pdf
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/97628276179.pdf
    • https://cdn.shopify.com/s/files/1/0431/4175/9138/files/bozuwawifuradaza.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054d2.bin
e4354cd4fd94d08e064750fc68c1bb053b69a03fb92b9757db94dadbfda8e557		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54D2 6084 bytes
font_01_sfnt_off00006966.bin
d2c77a4ae408b7d7ad12676132d7275e0e9031d609460ec5c35ab539fd2a7541		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6966 9900 bytes

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