Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2eb711ef47111c1…

MALICIOUS

PDF

81.0 KB Created: 2020-08-15 01:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 30251fb1272091667e0d1a702aa5c439 SHA-1: 3770fd369c79c19bbc99005532a09f887e887cb8 SHA-256: e2eb711ef47111c10c1c083cf663676d6ef8b590727ca6ca9d0508b01f72a312
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=chrono+trigger+manual+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious content as a game manual. The ML classifier strongly indicates maliciousness, supporting the conclusion that this PDF is designed for malicious redirection.

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/pify?keyword=chrono+trigger+manual+pdf In PDF document text
    • http://files.harmonyhillaussies.com/uploads/1/3/1/0/131070581/5941566.pdfIn PDF document text
    • http://files.vonsmartexercise.com/uploads/1/3/2/7/132712209/bewavajatate_fikazajilix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/96148719725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/calendrier_2020_avec_jours_fris_maroc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/kimeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/police_report_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/90827073592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8784/6806/files/odisha_govt_treasury_challan_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8790/4411/files/97014624948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0086/3640/files/accuracy_and_precision_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4543/7083/files/el_aleph_borges_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2688/2471/files/photogrammetry_slideshare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/42923783528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0844/0990/files/jisevifibegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/visivigilezofotuvivoxuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/beberubijuma.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001000c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000C 5184 bytes
SHA-256: 49b262a85858cd7bf70c65753bb7dfa40e4dfc4c0e0e0e8014038e2bff3921f1
font_01_sfnt_off00011184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11184 11080 bytes
SHA-256: 0ec022813070a0d5e6f387dbf2c87554225e24ca11689658d088c49634f1acc7

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