Malicious PDF — malware analysis report

Static analysis result for SHA-256 0867d1fdbff653c6…

MALICIOUS

PDF

38.6 KB Created: 2020-08-22 09:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9340341a677774c475c0ec9b6ed4ff0f SHA-1: 656f86474d381d6cd4c8038f1b6d40512b794b3e SHA-256: 0867d1fdbff653c626be55d407f516d75e374ee5de3354312577070c82346d91
154 Risk Score

Malware Insights

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

This PDF document contains multiple links, masquerading as sheet music, that redirect to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=danny+boy+flute+duet+sheet+music, which is flagged as a malicious redirector. The document's structure and embedded links suggest an attempt to lure users to potentially harmful content, likely as part of a phishing or scam campaign.

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.ru/pify?keyword=danny+boy+flute+duet+sheet+music
    • http://godawi.guycowley.com/uploads/1/3/1/0/131070161/sovubibewibu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/curso_de_mud_logging.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3097/files/eccentrically_loaded_bolted_joints.pdf
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/77006665683.pdf
    • https://cdn.shopify.com/s/files/1/0430/7723/8945/files/free_download_foxit_editor.pdf
    • https://cdn.shopify.com/s/files/1/0460/1407/0945/files/boxawi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/browser_for_android_2._3._7.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/59455831899.pdf
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/rita_pmp.pdf
    • https://cdn.shopify.com/s/files/1/0432/5444/8286/files/reducing_to_lowest_terms_fractions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/4055/5676/files/turifejisawasamojigo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/pabepenifigima.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000593e.bin
fba53a204ca1e9a102fb10c0f7d495279cb6d5bf63b43c41779dac78065b2754
pdf-font-stream PDF embedded font (sfnt) at offset 0x593E 5408 bytes
font_01_sfnt_off00006b87.bin
d8275407c6efbabfa5f81b09fa95f5f9a5475e41ac4c296a8ae48a39ce29aba4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B87 10024 bytes