Malicious PDF — malware analysis report

Static analysis result for SHA-256 04489142fe9398f9…

MALICIOUS

PDF

45.5 KB Created: 2020-08-22 19:07:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e307360c6a3f8444726a16e1c0602dda SHA-1: 22da4269c5de7b4e4bad67d4ce5514494123f247 SHA-256: 04489142fe9398f9c91b00375a61ade4f527be0635d8e34145df2e074da21709
154 Risk Score

Malware Insights

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

The PDF contains a lure for 'chloroform spray' and embeds numerous links, many of which point to potentially malicious redirector infrastructure. The ML classifier strongly indicates maliciousness. The embedded links suggest an attempt to drive traffic to external sites, likely for phishing or malware distribution.

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=chloroform+spray+online+in+pakistan
    • http://files.shelter-share.org/uploads/1/3/1/3/131383283/fc628b1b798.pdf
    • http://files.pianoreflection.com/uploads/1/3/1/3/131379971/29e8aa5dbd52.pdf
    • http://files.saujs.co.za/uploads/1/3/1/3/131383698/gimizowaju.pdf
    • http://files.ourdivecenter.com/uploads/1/3/1/4/131407135/6359097.pdf
    • http://miwar.hospicecareteam.org/uploads/1/3/1/3/131383283/nupefizi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/banjo_party_marathi_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/9282/6517/files/85778214651.pdf
    • https://cdn.shopify.com/s/files/1/0433/2742/2632/files/57542139782.pdf
    • https://cdn.shopify.com/s/files/1/0452/6433/9105/files/maglev_wind_turbine_with_ppt_seminar_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/gta_v_cheat_codes_pc.pdf
    • https://cdn.shopify.com/s/files/1/0434/9886/4804/files/bosch_automotive_handbook_7th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/4308/4705/files/towenajimexinigizoteveso.pdf
    • https://cdn.shopify.com/s/files/1/0428/3429/6988/files/87082194586.pdf
    • https://cdn.shopify.com/s/files/1/0434/3916/1500/files/623399273.pdf
    • https://cdn.shopify.com/s/files/1/0451/2278/1337/files/azhagendra_sollukku_muruga_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/vector_addition_subtraction_multiplication.pdf
    • https://cdn.shopify.com/s/files/1/0433/5216/2462/files/capstone_project_presentation_guidelines.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_off0000663e.bin
7bfc0a4362dad883913db7559dcbfea340ac235a5dc65404939b1a62f8b93d41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 5120 bytes
font_01_sfnt_off00007788.bin
bba262d70ceeef578ba897d454d8ab45307e11df57162c528f10c69495744506		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7788 10248 bytes
font_02_sfnt_off00009aa9.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA9 4324 bytes

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