Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc1c8b623f2f763…

MALICIOUS

PDF

41.0 KB Created: 2020-09-17 05:22:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 163f1c25918a9f1af899ef1f6c160221 SHA-1: d014e26e0dcbd75e79a98852895b9e5723db8183 SHA-256: 1bc1c8b623f2f76308e29be3e6e1c3fba0684559463e67109aef6d3c82ea9667
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links, https://ttraff.link/wix?keyword=olorun+god+reveal, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to external content. The ML classifier strongly supports the malicious nature of this PDF.

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.link/wix?keyword=olorun+god+reveal
    • http://fitades.beachcleaner.com/uploads/1/3/2/6/132696212/vezikebomefu.pdf
    • http://files.glotanningandhair.com/uploads/1/3/1/3/131381518/xururimerefibe-mexubalunilolo-rafodabe.pdf
    • http://fizomeni.customcabinetrynewbraunfels.com/uploads/1/3/2/6/132695517/38d55b9a286854.pdf
    • http://wizuzekaj.ottersideanimalhospital.com/uploads/1/3/1/4/131407355/4978110.pdf
    • http://files.submergeradio.com/uploads/1/3/1/3/131382217/femerunuwidi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/papigije.pdf
    • https://cdn.shopify.com/s/files/1/0431/9933/2516/files/sediroretunawug.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/school_spelling_bee_study_list_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/1594/5890/files/35687222980.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0663/files/65831270506.pdf
    • https://b522f127-848b-4a2b-b3d3-e8b9fa65bbe9.filesusr.com/ugd/b8c837_a357767181c94a8aa9a239054859cde9.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0438/3778/4229/files/aiag_msa_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/rajigalesapul.pdf
    • https://cdn.shopify.com/s/files/1/0451/1550/6853/files/damodar_valley_corporation_act_1948.pdf
    • https://cdn.shopify.com/s/files/1/0433/6104/2591/files/international_bill_of_rights.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006397.bin
ca7e6978bf6eee89153c2892bcc08614b3281c7b3e115813fc1d7fd77a4f1e28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6397 4904 bytes
font_01_sfnt_off0000745a.bin
18c9b7c6083d6c77b996aef6230a8afe116b13cb79f5a64f481f9674556b9d40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745A 10224 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.