Malicious PDF — malware analysis report

Static analysis result for SHA-256 433ece6f3c0d7aba…

MALICIOUS

PDF

53.4 KB Created: 2020-11-04 09:26:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ddabb95197abcecbd50653fe77b6cc69 SHA-1: 1515e5fb816bd968ad2980647fd49f27492226cf SHA-256: 433ece6f3c0d7aba3456064aecec0ff0d0d45d783284e53e97af4c3bd30aca81
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to known malicious redirector infrastructure. The embedded URL, https://gettraff.ru/123?keyword=st+joseph+fullerton+calendar, is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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://gettraff.ru/123?keyword=st+joseph+fullerton+calendar
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/jatixeg.pdf
    • https://cdn-cms.f-static.net/uploads/4413238/normal_5f9e7cc285d0a.pdf
    • https://gubaxefu.weebly.com/uploads/1/3/4/5/134592394/5360089.pdf
    • https://zomanuvid.weebly.com/uploads/1/3/4/4/134477829/fekijojiluzat.pdf
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/pijaxuviz.pdf
    • https://cdn-cms.f-static.net/uploads/4428329/normal_5f99d2a31e5d6.pdf
    • https://negofugino.weebly.com/uploads/1/3/4/5/134529575/fd546125.pdf
    • https://cdn-cms.f-static.net/uploads/4379744/normal_5f8b389be093f.pdf
    • https://kuromazu.weebly.com/uploads/1/3/2/6/132695519/ratopapudukexamuxone.pdf
    • https://likuxosudiva.weebly.com/uploads/1/3/4/6/134603152/9743368.pdf
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f8cccc335c39.pdf
    • https://cdn-cms.f-static.net/uploads/4383930/normal_5f8c0edb66b00.pdf
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/cb0a75df4b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/edcd0806-a3a2-460d-abd9-d0d6158a9294/xubatowivofokat.pdf
    • https://uploads.strikinglycdn.com/files/f59ae890-d70f-4af0-a2aa-ff980869c21f/bugs_bunny_costume_diy.pdf
    • https://uploads.strikinglycdn.com/files/635eb52a-6a06-4e88-acdd-6365c61160b3/jasikiriwufogul.pdf
    • https://uploads.strikinglycdn.com/files/b0ee2ead-1364-4216-bd4d-666a3a8aff44/instalikes_apk_hack.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006197.bin
da9227d803687063f66cf7dfa78de1ee905a540eef857ffc4d92688b8418ee34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6197 3136 bytes
font_01_sfnt_off00006cc3.bin
5911b6e20e97f3e1c985089500bf277319daa9c3a668341f2d00560c3a8343ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC3 5256 bytes
font_02_sfnt_off00007ea0.bin
b95f3e305dd79162ba9efb599d951c8f977a63384da8d54d48073da77c62147b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA0 11208 bytes
font_03_sfnt_off0000a4e1.bin
35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E1 16036 bytes
font_04_sfnt_off0000b94b.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB94B 4324 bytes

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