Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fe2857cb9a3e927…

MALICIOUS

PDF

95.9 KB Created: 2020-11-18 13:52:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9ea617ad929f4e299f44c468b11d96fa SHA-1: 2c2d14d89b2c0d12879fd29845cab453eae79b1e SHA-256: 2fe2857cb9a3e927573409683eabc20e7ed6ddb845332b942aafe5afb7aafc02
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL indicates an attempt to lure the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/123?utm_term=what+is+a+crescendo In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f93244618f23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387565/normal_5f8de8b1e7d10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5f9da144bc2fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/sununodogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ed235c9-baab-4bcd-b63f-627bc9289f73/tree_climbing.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/zojow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cdf48c6-7903-4de5-a457-a4041b3ab193/jinerozi.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/potato_soup_recipes_creamy_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/feluz.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/government_of_canada_ei_reporting_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25fe0a2a-6035-422a-8d31-ca5dbbe95b93/32520107577.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38d68ef0-05f8-4371-8e03-a0b57f464ab0/36517782885.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/prc_gov_ph_online.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off0001478d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1478D 17360 bytes
SHA-256: 094133da58e3648de0bcabd2df968a5cc91436eda183eac250fe2f0dfea11d2a
font_00_sfnt_off0000c8b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B0 5268 bytes
SHA-256: bdb8dc55c978f6644eb2cf70e6a9fbcfb40c317a6b77cf5a17a8f3409009bc5f
font_01_sfnt_off0000db1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1F 5008 bytes
SHA-256: 242e46b6548d7558b0198bdc790a7f95be2ef9a43cbd7a2e192fbee800fe6958
font_02_sfnt_off0000ec28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC28 2656 bytes
SHA-256: ff8289fcab20b7b81f5dc7c47458689637225d7099c48932a46d6898d6123f6c
font_03_sfnt_off0000f72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72F 2328 bytes
SHA-256: 18b250f24057ce91e4a59b25c1eec79fa8b4d7e2cb9f6c0de02c7e032a072fd4
font_04_sfnt_off000101e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E4 2108 bytes
SHA-256: 5fc9e2cd4e7ad04544edda2023dd698132b65daf167a61e09de9fd8de66d8b52
font_05_sfnt_off00010baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAF 6640 bytes
SHA-256: 593a452f0795506ac97007ad32b21767cc543cb1bc716fd74108abb5279d52e6
font_06_sfnt_off00011d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D4D 12852 bytes
SHA-256: f6f1c3673802f71da326c93599d97ae0a003106c9ee6f2ec6098f80481547b56
font_08_sfnt_off0001618e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1618E 3276 bytes
SHA-256: 36e71c95d3b6602ce175a98ac99a2c18c99235fab0e24c6c46ec4ff9e72f8c94

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