Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cf28fcdb2dbf1ff…

MALICIOUS

PDF

51.6 KB Created: 2020-08-02 05:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9e0f5e97fe4d8e26169a97491f6a41e SHA-1: 5e7a5c7a7885775aba542f9d0e5996d84a4ace11 SHA-256: 0cf28fcdb2dbf1ff640ca21681fd95b74348c59548cc2d8852a074140112e619
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector. The document body text, though partially obfuscated, contains the string 'Minecraft enchantments id' and a URL that points to a malicious redirector. This suggests a phishing or scam attempt designed to lure users to malicious sites.

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=minecraft+enchantments+id
    • http://files.junejordan.net/uploads/1/3/1/3/131380741/jajagovomotafatemofi.pdf
    • http://files.strikeaposellc.com/uploads/1/3/1/4/131454270/wusarasugigo_dejulakuw.pdf
    • http://files.sophisticatedpress.com/uploads/1/3/2/6/132681501/nepinovasujavizoros.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/6455/5675/files/4286847390.pdf
    • https://cdn.shopify.com/s/files/1/0435/9382/6463/files/totenurewuligimixibuzelev.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/pisexipa.pdf
    • https://cdn.shopify.com/s/files/1/0440/1466/5886/files/74136265303.pdf
    • https://cdn.shopify.com/s/files/1/0432/4468/3419/files/verizon_prepaid_phones_at_walmart.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/30315000740.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/kegutidelorofudew.pdf
    • https://cdn.shopify.com/s/files/1/0434/2792/2076/files/83752175563.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/matizozatile.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/fekuzajolatujujomozuxo.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_off00008c24.bin
b1a310b4ec5e1895ff2d42cafd515c500bf6144f3491827d53fe63264c83c62f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C24 5236 bytes
font_01_sfnt_off00009dcf.bin
9e82698c0462aacb0ff43e39a01f2bf656befb8615925fe9311e98cdcebfbf22
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DCF 10420 bytes