Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba9c394c7f662ac…

MALICIOUS

PDF

41.3 KB Created: 2020-08-02 01:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6249bdae4a969404df95186072a92ffd SHA-1: f9d9742943d7a71b9a518904028f45c702a99eea SHA-256: 6ba9c394c7f662acaab574e7a1cdf96010a26ee9e62729f1790bebe322bc865c
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Lowes montoursville pa'. The ML classifier strongly indicates maliciousness, and the presence of numerous external links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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=lowes+montoursville+pa
    • http://files.danagibbons.com/uploads/1/3/2/7/132740405/8740993.pdf
    • http://files.inclusionandequityresources.com/uploads/1/3/1/4/131437982/5103312.pdf
    • http://files.mesbodysculpting.com/uploads/1/3/1/0/131070611/0d90499ca3a9ec3.pdf
    • http://files.courtneywinfieldfitness.com/uploads/1/3/1/3/131380292/8350136.pdf
    • http://files.timeinthebush.com/uploads/1/3/0/7/130739883/c9a0d41.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/1008/8342/files/install_github_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/pmbok_5th_edition_free_download_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/0753/3475/files/darnified_ui_oblivion.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/puvukinepelorezozelal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdf
    • https://cdn.shopify.com/s/files/1/0431/8511/1203/files/livasizegusotazufegaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/4040041843.pdf
    • https://cdn.shopify.com/s/files/1/0439/7950/5822/files/sowubenerojoruzexega.pdf
    • https://cdn.shopify.com/s/files/1/0437/2532/4439/files/oaks_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/tejuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78986196578.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005782.bin
aee5e3e7c80d17808b6479a6b98c6a632a6d72893d41f40a317ef1b64d0c1ed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5782 4940 bytes
font_01_sfnt_off00006840.bin
eea8e83048c3cb6a365e647dd64481e726bfe3a6ec124afff6485b19c87388df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6840 9956 bytes
font_02_sfnt_off00008a5d.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5D 4324 bytes

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