Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f976c13f01939a…

MALICIOUS

PDF

37.1 KB Created: 2020-08-24 13:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0f6ce59c3604c4beb76cfb56100fc4f SHA-1: 3c85b0a4e004eeb1cc28508a6c5085b5f62483de SHA-256: f8f976c13f01939a4bcaefb208a086b3db688ed046c7ed5f6ae6bceb3973a39c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as free sheet music, aiming to lure users to a potentially harmful site. The document body and embedded URLs strongly suggest a social engineering tactic to drive traffic to the malicious redirector. No scripts were extracted, limiting the analysis of further payload delivery or execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=birdy+skinny+love+sheet+music+free
    • http://files.drlisamurphy.com/uploads/1/3/0/7/130776567/gofegidexelope-gejikog-tokobavuvudup-xixaboposavave.pdf
    • http://dovawazi.canwemummy.com/uploads/1/3/1/3/131383271/71756ab4dba.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7013/files/57148841350.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/9th_grade_biology_textbook_prentice_hall.pdf
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/18316518847.pdf
    • https://cdn.shopify.com/s/files/1/0448/9386/4091/files/iris_goo_goo_dolls_flute_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0459/7389/7383/files/patuxabovudekitekawipa.pdf
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/hoover_windtunnel_t_series_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0997/files/94635388445.pdf
    • https://cdn.shopify.com/s/files/1/0438/8660/8552/files/reduction_of_azides_to_amines.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/pasijesoka.pdf
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/base_de_datos_relacional_ejercicios_resueltos.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/ruzabemunupunobubozu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045d1.bin
0d8be857bced3265d5a7dcfa432c1033184b64fed16f749f1d3bd0fa1d8fb66a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45D1 5208 bytes
font_01_sfnt_off0000576d.bin
840e1383f6b39e964889c3b49b981a399e8275d649a48535d090fce6040f978e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x576D 9932 bytes
font_02_sfnt_off00007985.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7985 4324 bytes

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