Malicious PDF — malware analysis report

Static analysis result for SHA-256 782e1ed54649e1e5…

MALICIOUS

PDF

120.5 KB Created: 2020-08-29 01:59:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4a67e41015aa85614778c63c545bd4c SHA-1: dba1d77448dd9698cf2bb1dd8f91e5182e009e4b SHA-256: 782e1ed54649e1e5698cd7a7885b437a6960ef85035696e988632aad4627fbad
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, and heuristics indicate it is part of an advance-fee scam lure. The document body, though heavily obfuscated, contains a URL that is likely intended to lead the user to a malicious site. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=cerro+dela+silla+baile
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_33addcbd8a7c4947b9607219c9691ddd.pdf
    • https://static.usrfiles.com/ugd/b8c837_d9df642da5774e1194a80f0934fb8a8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_79c503918db642ea8fd40569d4896876.pdf
    • https://static.usrfiles.com/ugd/b8c837_315cf57f06f44d0e8c2a244d320bf00d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e93d75c96154d1f9f1bd31d147980fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_efdf07196f7542e7bbee4b81f1efb6f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_09334912cfe84fe58a2eb31cacd0fefb.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/jenegudusuwuvedotifegij.pdf
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/59875650551.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/43275508494.pdf
    • https://cdn.shopify.com/s/files/1/0447/0390/7993/files/sugelofe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1397/1861/files/16508976190.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_off0001a02b.bin
a6b5cb6c750b8b7870a5af28f36cf9cbc39bbcf20d284d6a2f3c244801615266
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A02B 4864 bytes
font_01_sfnt_off0001b0b8.bin
99fa953f34fe62601f5a675aa0f9ca86af66fccaf273af05dded5cebb080adb3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B0B8 10612 bytes