Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad1432c5af011be…

MALICIOUS

PDF

99.8 KB Created: 2020-09-20 14:41:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dab805847cab6248cfa2469d3c13c54 SHA-1: 8769ad2c53143995ba5f3598b167afcc2b7eb540 SHA-256: 4ad1432c5af011be64ddc396c1956c650e8af668a452f007fd66a6eaa77fd9a9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious URL, https://ttraff.com/wb?keyword=devilman%20no%20uta%20avu-chan, is flagged as a redirector to known malicious infrastructure. This suggests the document's purpose is to lure users to malicious sites, likely for phishing or to download further malware.

Heuristics 3

  • 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.
  • 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/wb?keyword=devilman%20no%20uta%20avu-chan
    • https://c1816e94-b3e0-47b8-a114-eb4e2afc5fe7.filesusr.com/ugd/112488_afca278efec54a1e8bc070fd46883ab6.pdf?index=true
    • https://39184e45-2a7c-4dfa-9398-7165156fe635.filesusr.com/ugd/d7c203_02ea3aa54255492683799e28759d5d42.pdf?index=true
    • https://609bb223-f075-457b-bdae-c881ab12b8bf.filesusr.com/ugd/d2cc1f_8435671658354aa3a937939f82a3e127.pdf?index=true
    • https://da6904b5-4931-4b96-90dc-dd12cd269372.filesusr.com/ugd/493135_167f9684015d4e35bb065d6f798bd2c2.pdf?index=true
    • https://5e8fae74-79f2-4d61-932c-9712ef5fa46b.filesusr.com/ugd/b0cd75_3b19b0565baf4753a0ea61d1a904bf99.pdf?index=true
    • https://d223c40d-6147-4871-aee7-dc9bd972567b.filesusr.com/ugd/696b8a_8be03f415c9a4318803814d636bc974e.pdf?index=true
    • https://d946b46a-ad1d-4f81-8cf1-ed57a8a87ea2.filesusr.com/ugd/941881_d3dac7e31e3d45c7958177bf6059c8e2.pdf?index=true
    • https://a870de9e-f3a9-48d4-a82c-33e3261b3b27.filesusr.com/ugd/e948c1_19b7c220e91048bab91278a29fc37631.pdf?index=true
    • https://eeaf3c29-4360-40f9-a0e4-ccad0a76b680.filesusr.com/ugd/6166c9_e822ff218af245059345e2f5c5502f49.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0482/7463/6961/files/sleeping_barber_problem.pdf
    • https://cdn.shopify.com/s/files/1/0437/4849/1425/files/developmental_biology_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/strengthening_the_soul_of_your_leadership.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/15162337277.pdf
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/jediwugepigidozi.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b5e8.bin
74c4671bcce042dc7fc24e852a55626319c469947ebb39014afeb381d3c5b19f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB5E8 43792 bytes
font_01_sfnt_off00013d5a.bin
d9374d6703894a38c5c59b87d26e3c6c26f4a8b9afd69b0bd21676d8a4a7fecb
pdf-font-stream PDF embedded font (sfnt) at offset 0x13D5A 4856 bytes
font_02_sfnt_off00014dc8.bin
defcca573505dd9b42104188e244c4b8fa4c9b43db568f609cfec62ce5377941
pdf-font-stream PDF embedded font (sfnt) at offset 0x14DC8 16936 bytes