Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e06c3b6b99ca76…

MALICIOUS

PDF

33.4 KB Created: 2020-09-02 01:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76d7793b9a65efd661eac8c7a3335f98 SHA-1: 6ddfb435f897a7d68bde3605865fddcabf6df96c SHA-256: 08e06c3b6b99ca765708ce3104b5502afe8241a48f685423fd397e0090790d9a
162 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a known malicious redirector at 'https://ttraff.cc/wix?keyword=yoruba+movie+alejo+olorun+2'. The document body, though heavily obfuscated, appears to be a lure for a movie download, suggesting a phishing or malware distribution attempt. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=yoruba+movie+alejo+olorun+2
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_34b50b827e3f437b9d9bbf6ab7b54bb4.pdf
    • https://static.usrfiles.com/ugd/b8c837_0bac334638874eb7886b943bbae14768.pdf
    • https://static.usrfiles.com/ugd/d1d005_bd6d13826e62496498a0c16bca5b6a2b.pdf
    • https://static.usrfiles.com/ugd/0f1814_7f2816fa92cf42119a4129d008408939.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd0ce4da3a354f04baf23d742bfe07a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6c190f4b6494997a8f83f845ef1045a.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5d4a7022c8449feb37ebda458bdbc95.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f994760ee454f9daf7516dd194d8805.pdf
    • https://static.usrfiles.com/ugd/b8c837_a245929504a444c6b1b6c2df20d37b56.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6520/files/42122832072.pdf
    • https://cdn.shopify.com/s/files/1/0435/1374/1472/files/vafapizazawiripu.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_off000046ba.bin
3e1a54cd3a57067f875e79dea2f8d40f65e610f3709a69c19bb1c84565efa1dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x46BA 5024 bytes
font_01_sfnt_off000057c5.bin
8d62ce80c4c2707fe4414b0b07c931f5546e2d936a4af12eaa1393201be7420f
pdf-font-stream PDF embedded font (sfnt) at offset 0x57C5 9844 bytes