Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b39579d4d6d6ce6…

MALICIOUS

PDF

43.9 KB Created: 2020-09-16 20:33:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c86424245dd4426ec227c46180421c08 SHA-1: 204068d122d8c20998d7ddfeb9690002f9e49406 SHA-256: 5b39579d4d6d6ce63fe67ddd6b6cb3b038c3099820f74c8835701dda2cb3b27c
154 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to known malicious redirector infrastructure at 'https://ttraff.me/wix?keyword=the+sims+freeplay+parents+guide'. The document's content, though heavily obfuscated, appears to be a lure related to a game guide, suggesting a phishing or malware distribution attempt. The presence of multiple embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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.me/wix?keyword=the+sims+freeplay+parents+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://de0e052e-02f1-4f2d-bcaa-edff2649fab4.filesusr.com/ugd/9d7ad9_287b88b780724cdba876bd76a9d2a994.pdf?index=true
    • https://c12ae92d-ff3b-49d3-98e1-288d87185d8a.filesusr.com/ugd/9c0842_508509100afd4a7192aca7e2d69dd02e.pdf?index=true
    • https://92ec828b-2f4c-45fa-b40f-fa110df1a5b8.filesusr.com/ugd/3cb679_3d31a7fa01254bb6909905dacc7e928d.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/8975588219.pdf
    • https://cdn.shopify.com/s/files/1/0428/3092/1895/files/70184856683.pdf
    • https://cdn.shopify.com/s/files/1/0430/3755/6889/files/62143540996.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2088/files/porter_cable_router_guide_fence.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/zugodor.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/1_to_1000_numbers_in_words_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/noriwurubezoxex.pdf
    • https://cdn.shopify.com/s/files/1/0434/0292/0086/files/18714651835.pdf
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/eduardo_galeano_el_ftbol_a_sol_y_sombra.pdf
    • https://cdn.shopify.com/s/files/1/0433/7264/2460/files/lotaduku.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/kavetakugaxosew.pdf
    • https://cdn.shopify.com/s/files/1/0432/9386/8187/files/64233299583.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_off00006c3d.bin
517fb0dcf7b8f9d86586a0cba6fc1de0cd0f0ec04492f50aae46aa020327c242		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3D 5504 bytes
font_01_sfnt_off00007ed4.bin
3117cd88c9c01ec0fcd53e8e7b2163e91912889fb1fe164becf13d23f34eeb25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED4 10332 bytes

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