Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf3a3f62075be49f…

MALICIOUS

PDF

70.8 KB Created: 2021-03-11 11:47:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b1a7e7a80236f93ed8fff9a922bf4e3e SHA-1: 9740b68ddf5e6ab0aab804b5fce21924d53a62c0 SHA-256: cf3a3f62075be49f302cad8db36aa1b3a746c50022c0b06b429aea2227b05e38
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xajibur.ru/award?keyword=capacity+building+in+education+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459624/normal_603ef9a1cd958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478134/normal_601d78d202fce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494149/normal_5ff7132753299.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/FpNjdal/zuwejajunafes.pdfIn PDF document text
    • https://cdn.sqhk.co/bowawugafux/h6ghMKU/dodgers_time_warner_deal.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/4z3Gphh/ea_sports_ufc_mod_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413850/normal_5ff0f69e2bff6.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/e5haifr/full_steam_dumpling.pdfIn PDF document text
    • http://optamorem.com/64105617313u0tng.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478415/normal_60124f6c77880.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489422/normal_5fcd356beb4a5.pdfIn PDF document text
    • http://momentshop.space/how_do_you_reset_a_kenmore_790_ovenw2yme.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/jjhbggs/26438622620.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486060/normal_6006f8a14a08a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/62722790070.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/puxajerimetudixuge.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B7 5196 bytes
SHA-256: 901422f2e56a250938c44c791aa0f04fd35f3eb27fb2623e931c808121d312a7
font_01_sfnt_off0000eb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB81 10164 bytes
SHA-256: 3b11ee897cb1d7e9a11ca00af6ab16530b8b26cf41facca6be74c30fe86ecb4d