Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a6f933032040dec…

MALICIOUS

PDF

39.1 KB Created: 2020-09-18 03:16:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f12e9044565abe3837641f3c7808d13 SHA-1: 08afb8efb62c00009d0be65295f8456e14e2f9e6 SHA-256: 6a6f933032040decf5e6c420e1878a44c8de6491a29c931d67615a580649753c
162 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.club/wix?keyword=public+boulevard+crossword+answers', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify URLs, suggesting a link farm or redirection scheme. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector points to a phishing or malware distribution attempt.

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.club/wix?keyword=public+boulevard+crossword+answers
    • http://winida.elamalawi.org/uploads/1/3/1/6/131606201/ginusidememufez.pdf
    • http://pofasuw.clockworkpositive.com/uploads/1/3/2/7/132712019/4996676.pdf
    • http://files.roseviewfarmborders.com/uploads/1/3/1/6/131606373/fuxopidabiz-sekuz-fuxir.pdf
    • http://files.childrenssunflowerhouse.com/uploads/1/3/0/8/130813781/c2653474f4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/2973/2248/files/zamerunepojejupofebomufix.pdf
    • https://cdn.shopify.com/s/files/1/0433/7700/0611/files/aprender_italiano_descargar_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9930/7673/files/binuramaro.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/75278306550.pdf
    • https://2106c3c0-4ab6-4828-8e86-efbc1a0b8aaf.filesusr.com/ugd/7598fa_cb050a5f30044cca9c62d593ce2a2a65.pdf?index=true
    • https://13a29e59-92ac-4ac7-9e47-8c24cd7307e6.filesusr.com/ugd/0fdb6d_b7eee557f57f473a8e273e373be9738f.pdf?index=true
    • https://23c0ce91-425c-456a-a01b-e61be39186da.filesusr.com/ugd/145364_7f5a76bb3be4400fb9673fff95193457.pdf?index=true
    • https://2b644281-429d-454b-906e-ac28cec82493.filesusr.com/ugd/a838c0_805bb96e49d340de9ef21c1e5b4802e3.pdf?index=true
    • https://bda67e74-ade8-4034-b044-464ff8662f66.filesusr.com/ugd/fdd6c2_6dd6bcaf7ab2414fbc8d5c985bfc095a.pdf?index=true
    • https://faed033d-5f03-4ace-9da9-d022a33a3531.filesusr.com/ugd/61567a_ff9eaa2499db4f36971b5995745f723d.pdf?index=true
    • https://70fe03ef-9063-4e89-9824-381fb034ff89.filesusr.com/ugd/2f7489_14fd3394d5614e04937ab7a5eeaee114.pdf?index=true
    • https://0e189583-5226-4ffa-a482-9de8876bff1a.filesusr.com/ugd/69695d_99ccf1a22631453aa75eff0eb06e4f78.pdf?index=true
    • https://6bb88608-8a9a-4666-82ed-da0ada430710.filesusr.com/ugd/63d3ad_08db8df95ff7477c8fdc65172c1a560d.pdf?index=true
    • https://969f7eb9-9be6-4709-9cb0-90a0d0e128c9.filesusr.com/ugd/4fea5c_61101e2bc1454bbab6360e3acd8641a0.pdf?index=true
    • 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_off00004e31.bin
37229e0ca1cd4a7b85c2bd781470185a727ce358b4be49489c8c21a3cc8a367e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E31 5028 bytes
font_01_sfnt_off00005f4f.bin
fefcd6c01a3e542725232c9ddb2c9e65dcd33660ce2b429cff337c81342d55ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4F 9828 bytes
font_02_sfnt_off0000810f.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x810F 4324 bytes

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