Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac7cde492b3bf94…

MALICIOUS

PDF

46.3 KB Created: 2020-08-18 12:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64ab280ad7a29fe1f7ead41014480a83 SHA-1: 696a240e6c75584d337a49d95672ccce8c90d859 SHA-256: eac7cde492b3bf9414694b60f30162c23b86d2b8e22b4d6ebe79cc99e4c0b328
120 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 of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=gastroenteritis+akut+pada+anak+pdf'. This indicates the document is likely part of a phishing or malware distribution campaign, using the PDF as a lure to redirect users to malicious sites.

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=gastroenteritis+akut+pada+anak+pdf
    • http://wojivi.poetrywithirena.com/uploads/1/3/0/7/130775518/2f88f2d64c2.pdf
    • http://nebexozi.emmazang.net/uploads/1/3/2/6/132695569/kizezuw_tilufadu.pdf
    • http://files.easternshoreyoungadults.com/uploads/1/3/1/4/131453268/funel-wesupoxawuf.pdf
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/67316204404.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/33539150262.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/totedavonaxojuvewu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1734/files/ffxiv_archaic_enchanted_ink.pdf
    • https://cdn.shopify.com/s/files/1/0436/5172/7513/files/bifewudizupegebaza.pdf
    • https://cdn.shopify.com/s/files/1/0435/5565/1743/files/dedikutexibitawano.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3784/files/98460556904.pdf
    • https://cdn.shopify.com/s/files/1/0434/0449/2950/files/el_procedimiento_analtico_o_pormenorizado.pdf
    • https://cdn.shopify.com/s/files/1/0434/6671/9385/files/83922492723.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/consultant_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/2423/7212/files/risituwogifubadupolip.pdf
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/tusivajoj.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_off00007713.bin
1cbce4d4e2353c0e0085cf62e1573cfc4c85e07d215797f19fc0e9883fd3ad51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7713 5096 bytes
font_01_sfnt_off00008882.bin
7f5882c46e2a1c15852a501e76f1b3484b7862b627a8648d01f43830cc31419a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8882 10400 bytes

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