Malicious PDF — malware analysis report

Static analysis result for SHA-256 0670d36d897630a2…

MALICIOUS

PDF

42.8 KB Created: 2020-08-30 08:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dec2f0646fea54a257ca2f46c773b207 SHA-1: 1673bd07e3f637122eb9a0452d2918cbf5b53912 SHA-256: 0670d36d897630a241bb1164b284dc8fae434a83241c48c33b267f54097540d3
154 Risk Score

Malware Insights

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

The PDF contains a link to `https://ttraff.com/wix?keyword=pokemon+gale+of+darkness+game+downlo`, which is flagged as a malicious redirector. The document also contains a large number of links to PDF files hosted on Shopify, suggesting a link farm for SEO manipulation or to distribute further malicious content. The presence of these links and the ML classification strongly indicate a malicious intent to redirect users to harmful sites or download further payloads.

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.com/wix?keyword=pokemon+gale+of+darkness+game+downlo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/2601/2567/files/49803415916.pdf
    • https://cdn.shopify.com/s/files/1/0428/5559/6198/files/70239110710.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/42128305269.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7460/files/binary_tree_visualization.pdf
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/67039184329.pdf
    • https://static.usrfiles.com/ugd/b8c837_14d5b98d8a524ed79a238b69e8ec879b.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b4af1d3e5da46b993c3cdf2095c5294.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e6aea36c5cd4d009ef0b9ffa9e8055f.pdf
    • https://static.usrfiles.com/ugd/b8c837_313294f36f494534b0edf1813c446110.pdf
    • https://static.usrfiles.com/ugd/9219f8_f04b1552c3104656b03baacc4e0fcb42.pdf
    • https://static.usrfiles.com/ugd/b8c837_2526511def294fe18bce66adcfdb3219.pdf
    • https://static.usrfiles.com/ugd/b8c837_a69c188e6dac4e05bb7d09d2ebeec3c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_26bb621c7d8248298c8faafd44e75198.pdf
    • https://static.usrfiles.com/ugd/c1615c_4d00c51e4e0643628cdf4f1443c5e690.pdf
    • https://cdn.shopify.com/s/files/1/0435/5653/6471/files/62611444684.pdf
    • https://cdn.shopify.com/s/files/1/0436/5356/2526/files/rental_agreement_amendment_template.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_off00005b53.bin
4bed14eac00c961ac19991839adf6acc4d239086a0b75a62c298d674aa7ff8e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B53 5044 bytes
font_01_sfnt_off00006c6a.bin
359942cdc4242d6cc77a1bada6d066b7202ea46fd4292546d2c9ab8ecef6e6f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6A 10528 bytes
font_02_sfnt_off00008fec.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEC 4324 bytes

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