Malicious PDF — malware analysis report

Static analysis result for SHA-256 445300b362a075a5…

MALICIOUS

PDF

38.8 KB Created: 2020-08-25 06:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 805381cc9e2a3bed8f2f5374137ae7dd SHA-1: a37f5c317fce056961a0aaa76476ec5a5c5671d7 SHA-256: 445300b362a075a516e29f797a7c69b0ca98f3215d0e22ee639d3c5c996677b7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=10th+grade+chemistry+questions+and+answers'. This URL is likely part of a phishing or scam campaign, attempting to trick users into visiting potentially harmful content. The document also contains a large number of embedded links, many of which point to external PDFs, suggesting a link farm or SEO manipulation tactic. No scripts were extracted from this sample.

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=10th+grade+chemistry+questions+and+answers
    • http://goreri.healthhappinessnow.com/uploads/1/3/1/4/131454269/028141e2d1ca.pdf
    • http://joxumi.kyungeunkim.com/uploads/1/3/1/8/131856257/goriwonizino_lazutobutub_fatavog.pdf
    • http://files.nysekwang.org/uploads/1/3/1/4/131406060/7577055.pdf
    • http://dawuxejop.tavisdupreez.com/uploads/1/3/1/4/131438304/migakiwutekufalawez.pdf
    • http://rotake.knowbiblefactsfromfiction.com/uploads/1/3/2/7/132712207/nadorejaribugo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/enlaces_quimicos_tipos_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/4452/8550/files/corsair_275r_build_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6222/3263/files/bezonofuxotixesagame.pdf
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/xojijamemos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0436/6581/7753/files/muwuzezabuzivuxojek.pdf
    • https://cdn.shopify.com/s/files/1/0437/2204/7638/files/corrugated_sheet_metal_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/nokinipijaganisogokejof.pdf
    • https://cdn.shopify.com/s/files/1/0435/1731/3178/files/zupimofakepukararoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/21448178147.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_off0000582d.bin
a46e6be9fd26e5bfbbc5ea520a0e6bbd5117de9cf21206878adf7b5a4f0a8e2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x582D 5740 bytes
font_01_sfnt_off00006ba5.bin
ec59202ab681178fb7ec5b8c1e06339e0ebafd207c830c2833c14b9ef53403d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA5 10192 bytes

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