Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e7648f6800cae8…

MALICIOUS

PDF

43.9 KB Created: 2020-08-30 06:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92f71911b6b3bcdcbfca944eb53a1f3b SHA-1: f87e530cb11122646d29f115c9d85cc29c786a8a SHA-256: 06e7648f6800cae8bbb40661fa1aa883591a0abb7c3f5c6dac9a46d9ecc9ae75
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific URL pointing to a redirector, indicating a phishing or scam attempt. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's content is designed to trick users into parting with money or information. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lead the user to a malicious website.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=red+leaf%252C+yellow+leaf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/db1da1_7de6d2417f094f6aa44d05185e524d6d.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc1383b23ffe42938e303f7af01c5fc7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9b8e2d6641343489e16d1e6645c7033.pdf
    • https://static.usrfiles.com/ugd/0aab01_3b4af6cdfb48415983bee9cb0d234213.pdf
    • https://static.usrfiles.com/ugd/b8c837_b80571a74ef743bb8a606f7238b92152.pdf
    • https://static.usrfiles.com/ugd/39cb9d_1cb3549a46c24e39b3d72f46096b2b7a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c9c9cb729df4c818de01045768e1714.pdf
    • https://static.usrfiles.com/ugd/b8c837_86d54e8d69fe4f04bbf2cadaf2383e9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_32d8c759d9004088975ea47f8fdf876f.pdf
    • https://static.usrfiles.com/ugd/b8c837_499c8ad6c9ab4dd1a51819844814866c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee9db509fe3b41b8b98ae1688667e26e.pdf
    • https://static.usrfiles.com/ugd/2486b5_daae1c305f1a48c6a276095d232389b7.pdf
    • https://static.usrfiles.com/ugd/3f80ec_3aab32b5ab744f04a8eb338b38d7096f.pdf
    • https://static.usrfiles.com/ugd/b8c837_05541944863e4a8cb301cb6a7e10482f.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/32228510481.pdf
    • https://cdn.shopify.com/s/files/1/0436/0205/1235/files/caldera_junkers_euroline_manual_usua.pdf
    • https://cdn.shopify.com/s/files/1/0437/7346/0631/files/enlace_ionico_ejercicios.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_off00006282.bin
58f6359e29d3ccab32a3573a4513264d54b7ce710fef0390d516c3d67d9f99f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6282 4440 bytes
font_01_sfnt_off000071c0.bin
daae99785b991503753c09218b16aed53a32e9273097b376140baa98e4b31f5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71C0 10312 bytes
font_02_sfnt_off00009505.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9505 4324 bytes

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