Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e6179b720212dce…

MALICIOUS

PDF

44.8 KB Created: 2020-08-30 03:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46d6f1501f5af6fe6b5647af125763f9 SHA-1: 177bfb921d0e76c687be0e9dce1771c978626d14 SHA-256: 0e6179b720212dce4c7c25ea78bedc1761fbcdb6cd4da13fa4f0f1840c9fb4e0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that lead to a known malicious redirector, suggesting an attempt to phish or deliver a payload. The document body, though heavily obfuscated, contains text related to a 'dairy queen application pdf' and the malicious URL, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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.ru/wix?keyword=dairy+queen+application+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/7022/5574/files/pemojamepolo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/2061759507.pdf
    • https://cdn.shopify.com/s/files/1/0465/5008/9878/files/open_excel_sheet_in_macro.pdf
    • https://cdn.shopify.com/s/files/1/0428/1391/5303/files/77863322.pdf
    • https://static.usrfiles.com/ugd/353d00_871d5e7893624112a4ad9d08676d5609.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c9dc17f58ea457fae53f3754bd9556e.pdf
    • https://static.usrfiles.com/ugd/735189_d0b9cded1e044c82857c0c28d265cce4.pdf
    • https://static.usrfiles.com/ugd/409ca8_8a3c60f763de46548146129fab3d70bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_f44395fece5340d8b2952a9db3289c90.pdf
    • https://static.usrfiles.com/ugd/2ac701_13f0cc648f8f41a5999653dc07d29147.pdf
    • https://static.usrfiles.com/ugd/bb13a2_3d482aa208ee46aaa86f95c1d6b272d0.pdf
    • https://static.usrfiles.com/ugd/df4650_678a9f65ca8d4ed4a0bdeb4f66826462.pdf
    • https://static.usrfiles.com/ugd/affb4a_65eb539fd62545e4b50af919f14bd79b.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062ae.bin
6c0d57907fa3ceec6686170bf315a53c4eead456a1e9fb4062e8130f8f96a2a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x62AE 5080 bytes
font_01_sfnt_off00007406.bin
75d03a7d191d9b0bfb0e91af118630b6eac5e9f949c4cb2ef874934d14b97c5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7406 10656 bytes
font_02_sfnt_off0000984c.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x984C 4324 bytes