Malicious PDF — malware analysis report

Static analysis result for SHA-256 df54d17fe766ef75…

MALICIOUS

PDF

47.1 KB Created: 2020-08-29 20:21:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfcd50bcf884a0f490ea4e9e32e93861 SHA-1: 5ed137f082a28fcf1d8906ff90800066989f9414 SHA-256: df54d17fe766ef757d3f58f651cb18903579ab2659997f40c411a424206b0b90
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Destino final 5 online latino', suggesting a phishing or scam attempt. The ML classifier strongly supports the malicious nature of this PDF.

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/wix?keyword=destino+final+5+online+latino
    • https://static.usrfiles.com/ugd/b8c837_c7fadf8df241422da7046e59ae0f5121.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c5b2d63d23244fd94b587fa27ec72a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_ecca9774b4e14120a00f63ae7b267244.pdf
    • https://static.usrfiles.com/ugd/b8c837_30133338fe614a2a8091094c329c4363.pdf
    • https://static.usrfiles.com/ugd/b8c837_425f876c42304fc58deadb6123b02bf4.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdf
    • https://cdn.shopify.com/s/files/1/0430/3136/3747/files/sheet_music_dynamics_symbols.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/helix_mattress_reviews_consumer_reports.pdf
    • https://static.usrfiles.com/ugd/b8c837_9204ea580f5f44c6bc5d9c83bcc08aba.pdf
    • https://static.usrfiles.com/ugd/b8c837_7104a7ca51f5421692aa516abb9af24d.pdf
    • https://static.usrfiles.com/ugd/b8c837_a31154a2a5104b1ba57ce54218b359aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c4447c9d86d4798811c3c40db0d282e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d92b88587ee450aaaa20a7ded358862.pdf
    • https://static.usrfiles.com/ugd/b8c837_11cf90d9264a4d69bbb1320605358a50.pdf
    • https://static.usrfiles.com/ugd/8b97dd_bfe944ba280442f3a8d160ec66c384e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_f6f01d067cf54a63b6bc79927bb47493.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c1d.bin
b18ca5cf49ff253f3f15b2900a1c03ceb231fe7e86af51945e4ee7a19cb9ea48
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1D 4788 bytes
font_01_sfnt_off00008c7e.bin
315e8e851838d78107645e395f3a9e73bc2fcfcd1f5915e4f31801caef015e46
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7E 10324 bytes