Malicious PDF — malware analysis report

Static analysis result for SHA-256 05272df030e78766…

MALICIOUS

PDF

40.6 KB Created: 2020-09-02 00:10:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f80cbaa2470ad73dbfb8f488f7d90d2 SHA-1: 64cad9c26e7f5fe5438ee70c594fae245cc86c9c SHA-256: 05272df030e78766e4c9eb8cd1e209cad16afaf1fdde95e6322aab2e0ac9801a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which are designed to appear as legitimate PDF documents but ultimately redirect to the malicious domain 'ttraff.com'. This technique is commonly used in phishing campaigns to direct users to malicious sites for credential harvesting or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of a known malicious redirector URL supports this assessment.

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=possessive+form+of+children
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/08e331_2ca6ead4e26140bfb8ac13ab91d85c4c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1f77c90893a4412aaa3473ad3b14f38.pdf
    • https://static.usrfiles.com/ugd/bf0735_16cbc5af6b39467c8afdc87813b38f34.pdf
    • https://static.usrfiles.com/ugd/32777b_9327ae5ce7e74b53b5a09c77a1a339d7.pdf
    • https://static.usrfiles.com/ugd/5b604d_5338ca410cff4869a94487f275e92d1b.pdf
    • https://static.usrfiles.com/ugd/289c5e_cec4bc8cf66c473a945f2378c1595349.pdf
    • https://static.usrfiles.com/ugd/b8c837_26cbeba4ddf04da9969db20fa7e30476.pdf
    • https://static.usrfiles.com/ugd/c1c462_87245b146238431b81eb89a183787397.pdf
    • https://static.usrfiles.com/ugd/bfbc46_a9ca6551621d4bd2aab11192161c4aa7.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/koganivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/95465073548.pdf
    • https://cdn.shopify.com/s/files/1/0463/2680/8737/files/12171681747.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0924/files/78164888667.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_off000061e7.bin
2632255e172c87ccd398486f9e830831ca8e9ca79d4465c3c5ed46f595e1e3c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E7 5112 bytes
font_01_sfnt_off0000732e.bin
39be70a5cdc97ab01d054f6ced90ccee106ad991b67c5388c949a175fcf31a4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x732E 10028 bytes