Malicious PDF — malware analysis report

Static analysis result for SHA-256 630d519ad677cb4c…

MALICIOUS

PDF

45.7 KB Created: 2020-08-26 04:18:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6415b55c8fe1b9b0e15cb139e164480a SHA-1: 98dbb69a493e7d891d996d3f3472d4d2a1663296 SHA-256: 630d519ad677cb4c7b167bc3aabbc8693eb617b53c09b6fd4142e970eeee2113
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector link to malicious infrastructure, indicating a phishing or scam attempt. The document body, though partially corrupted, suggests a lure related to workout programs. The presence of numerous external links, many pointing to Shopify-hosted PDFs, suggests a tactic to appear legitimate while distributing malicious content.

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=programme+musculation+3+fois+par+semaine+pdf
    • http://files.shineforfiveboutique.net/uploads/1/3/1/1/131163898/7639e0c67378e8a.pdf
    • http://kixod.flexypakofli.com/uploads/1/3/1/3/131380983/175171.pdf
    • http://files.moonfulmama.com/uploads/1/3/0/7/130739674/7138471.pdf
    • http://files.megabiteschocolate.com/uploads/1/3/1/4/131438274/kuvajut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/bukidudinumese.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9560/files/benedict_s_test_principle.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/48133838941.pdf
    • https://cdn.shopify.com/s/files/1/0431/5961/7690/files/bukilalizabun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/52664957592.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/libros_aprender_frances_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/archimate_certification_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/2606/9157/files/rivanogabomopokigejozutu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/wuripeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/toxedifanedidomuto.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/bexesexevasazafu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9236/files/96697261933.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_off000070bf.bin
88d7ba1be8885ab4b22e6242332ca3d52122883fa3a65e3fc5653e70847369fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70BF 5640 bytes
font_01_sfnt_off000083d8.bin
aab7639711a19e6b528041d90e308e11a918586b4c8628f725fb5403a094a5b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83D8 11344 bytes

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