Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8f0f08c8467e1a2…

MALICIOUS

PDF

44.7 KB Created: 2020-09-07 00:15:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f22092d53e3f5c2640a32f0b393ab894 SHA-1: 7284cdf6ee966b2fe8a432f1bc539118196d11c6 SHA-256: e8f0f08c8467e1a2b6e60fb39c016755c3fb76a3dc94c20bdf2013b2d5b73b22
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=fernandinho+galileu++cd'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL and other PDF-related strings, suggesting an attempt to lure users to a compromised site.

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.club/wix?keyword=fernandinho+galileu++cd
    • https://static.usrfiles.com/ugd/3aee12_997394e84b2c43ce97c7aea9f9f67e11.pdf
    • https://static.usrfiles.com/ugd/d4c4cf_b646050026284177bb8ca2aea8e9b686.pdf
    • https://static.usrfiles.com/ugd/361045_9631d4184a10444e87a3036d1efd52a9.pdf
    • https://static.usrfiles.com/ugd/b7ed05_66036ec312d14cc7867052462d8a0587.pdf
    • https://static.usrfiles.com/ugd/0d9a50_ae6a2d2b96304b319a70bea93784c8fc.pdf
    • https://static.usrfiles.com/ugd/8127dd_482b9f4d40d84883aadc7a444a029f1c.pdf
    • https://static.usrfiles.com/ugd/fdee49_0de1ce5160e7413cb350ce26f82de017.pdf
    • https://static.usrfiles.com/ugd/f55bec_19040a15a8a84d14baaa1d191627336e.pdf
    • https://static.usrfiles.com/ugd/60933b_9aed632c2bda43cd9709d54fe1478e3a.pdf
    • https://static.usrfiles.com/ugd/c0518c_01dc0ab7bdbb4a9aa2460cc040142bed.pdf
    • https://static.usrfiles.com/ugd/3615fb_a7fe52dcde9d4d6288f1db99e38ecd74.pdf
    • https://static.usrfiles.com/ugd/35ddae_f16db05e70134fa7b69dc7c3c58701fd.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6840/files/25031051851.pdf
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/88282098732.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30812088679.pdf
    • https://cdn.shopify.com/s/files/1/0463/6796/5339/files/ms_word_cv_templates.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5712/files/hotel_room_revenue_management.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_off00005df9.bin
1813c493917938cf54948d420bd9623416e1d65fbda732ea18f43877b0ae3cc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF9 4976 bytes
font_01_sfnt_off00006ede.bin
b35ce9270188240663ede04ca525db44c01da8443b94496b06866beff7dec7aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDE 9852 bytes
font_02_sfnt_off000090f1.bin
301fb2f14aa1e9a5cf8540ebf40f17e8311eb9ba756e1d76589e408feb703965		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90F1 16096 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.