Malicious PDF — malware analysis report

Static analysis result for SHA-256 63df7119c88fd315…

MALICIOUS

PDF

40.8 KB Created: 2020-08-08 09:36:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6efe5d61df684f7d24d4969d43c5bf4 SHA-1: d2b8a766b06db80d10c985c475ec041388a7931a SHA-256: 63df7119c88fd31562e21289f30da7b7d35483135a427af237a855adfd391f9f
162 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, disguised as a KPMG aptitude test sample. The document body and embedded links suggest a phishing or scam attempt to lure users to malicious infrastructure. The presence of numerous PDF links, many pointing to benign Shopify URLs, indicates a potential SEO link farm used to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=kpmg+aptitude+test+sample+questions+pdf
    • http://files.bedsgympie.com/uploads/1/3/1/3/131382274/zawudimasekogotoxizu.pdf
    • http://jugalazi.nasiiclothingstore.com/uploads/1/3/1/6/131637016/6414532.pdf
    • http://pipegetep.graceandknowledge.net/uploads/1/3/1/6/131606407/vodale.pdf
    • http://files.jacksonhighley.com/uploads/1/3/2/6/132681295/tugateja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/xomomobivinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8250/5628/files/ditum.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/gamuvevipawubibamexezeda.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/58091839687.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/78007977418.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/61195171526.pdf
    • https://cdn.shopify.com/s/files/1/0435/2484/9815/files/cours_sur_la_cirrhose_du_foie.pdf
    • https://cdn.shopify.com/s/files/1/0435/3225/5392/files/dosijitoxebavikutawu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4379/files/59188083171.pdf
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/7388008273.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_off00006074.bin
5eba59e748170ec90ec9b02c00c9c1d9947b0faecd77af3c8b8bbae6f6e7c6af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 5360 bytes
font_01_sfnt_off000072a3.bin
3bfd5b889d37769d55c5f4dc6d4b25dbc83031e2c39a4c6d4a8c91f1385fb92d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A3 10412 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.