Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6d86e19989a921…

MALICIOUS

PDF

41.2 KB Created: 2020-08-18 20:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a11868ffcb864e158a4d28393fbe02e2 SHA-1: b399d5dbb7e469403d2975cd3c198b421e5377eb SHA-256: 5e6d86e19989a921b913d57ea825cde05cb957f4067776dcad802a05ed9220f6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, identified as a link farm. One of these links, https://ttraff.cc/pify?keyword=bopp+del+ecuador%2528+termoformado+quito, points to known malicious redirector infrastructure. The document's purpose appears to be to lure users into clicking these links, which likely leads to a phishing page or malware download. No scripts were extracted from this sample.

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=bopp+del+ecuador%2528+termoformado+quito
    • http://files.ballancricketclub.com/uploads/1/3/2/8/132815916/welobigeke-tedepo-wavifipuvam-mofevume.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/4655/8106/files/preventive_and_breakdown_maintenance_comparisons.pdf
    • https://cdn.shopify.com/s/files/1/0430/8441/5143/files/xuduxu.pdf
    • https://cdn.shopify.com/s/files/1/0448/0725/8278/files/49122064498.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/datebumek.pdf
    • https://cdn.shopify.com/s/files/1/0434/6373/7510/files/100_carols_for_choirs_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/enfermedad_hemolitica_del_recien_nacido_2018.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6867/files/71686559601.pdf
    • https://cdn.shopify.com/s/files/1/0433/3325/5323/files/49050466130.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/44609186417.pdf
    • https://cdn.shopify.com/s/files/1/0428/9167/3763/files/pathways_2_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/84525433436.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a7a.bin
5d042bb79c525598a5886d86ebb487509c1f6de7cc3dcd2df00a213e3fbc74d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A7A 3020 bytes
font_01_sfnt_off0000553b.bin
e92025f976275f12295036c957ab5548c930d4d010b306a6acf57c8f33487070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x553B 5152 bytes
font_02_sfnt_off000066cc.bin
a327fc962b33d0624661b6ff809c3729fd21d36f755e9ba3f16c144f875a8b35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66CC 10204 bytes
font_03_sfnt_off000089ac.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89AC 4324 bytes

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