Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aaee96ccaca025c…

MALICIOUS

PDF

84.8 KB Created: 2021-03-19 05:29:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: a9e4764aedb5441eb1a456fb99cf088d SHA-1: 4e8c00fe936b9f1ff6bf0cdf46ba30e1636403a2 SHA-256: 2aaee96ccaca025ce711ff9b6c5a71ad8c56b329a7dada8ef37c37e925bf4a25
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent link pointing to 'dugedepap.ru/award'. This URL, combined with the heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.Trojan', strongly suggests a phishing or malware distribution attempt. The document body, though heavily garbled, contains keywords related to the URL, indicating a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://dugedepap.ru/award?keyword=bruchrechnen+erkl%25C3%25A4rung+pdf PDF link annotation
    • https://cdn.sqhk.co/fabetojowuje/bSQQVp3/duet_bakery_menu.pdfIn PDF document text
    • http://kindraretterath.com/dd-wrt_operating_mode_gateway_or_routerp6r6j.pdfIn PDF document text
    • https://cdn.sqhk.co/remavaveso/APchdgi/6381532325.pdfIn PDF document text
    • http://creditactive.info/dipabifujilowuzfecxe.pdfIn PDF document text
    • https://cdn.sqhk.co/vimitewimuwi/onu0Rr2/19059551422.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/igd7Bjj/27165342052.pdfIn PDF document text
    • http://wegansit.space/fm_2019_best_striker_rolev3xjy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/92f67afa-ecbd-45f5-b7fc-fa42e48008e3/multimetro_cen_tech_p37772_precio.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/basic_instinct_tamil_dubbed_movie_isaimini.pdfIn PDF document text
    • https://2559d30b-64cd-4b4d-aaad-e76a675dde99.filesusr.com/ugd/f5a024_519c20d1c9d941fdacdbd97687fbf07d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xesigeze/96594792233.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/62485929250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ee943bc-63e5-401c-9aa2-b72023a5e6b9/what_is_ati_nursing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2709424a-b7e3-4885-b5ec-68bb971c811b/94556366250.pdfIn PDF document text
    • https://f77c8dad-41d7-4a8f-8d8d-c05149a3a236.filesusr.com/ugd/36d413_f77eb6fc44fb4699ade98dda6a4f7d24.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b1dfb46-83c9-4373-a702-3c84080f42e1/4601597753.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37ce14a4-16f8-42be-bda3-1e47e3f3c1b2/dupujofilitikafavanavasap.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/letter_e_tracing_worksheets.pdfIn PDF document text
    • https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_56c1056756f24bd2ae892a1b6a09d4f4.pdf?index=trueIn PDF document text
    • https://8d90b851-447f-4cfc-ac95-1e867b71b983.filesusr.com/ugd/b371d9_222855c40e1343c586b702006b4cfeb7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeb98f19-b2b9-4434-bab8-e5727ae0ced5/temakuzuzuzizowonose.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/75041352922.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EC 5380 bytes
SHA-256: 1161000a9156e978cd6e9f455832481dec7454cfbc5f5514671e2eeec3843346
font_01_sfnt_off00010634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10634 12296 bytes
SHA-256: 6d0d8c7378f7a6a6f504432c40276886963d35302cbc0a55d6edd2f8920828c3
font_02_sfnt_off00012f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F18 16060 bytes
SHA-256: c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c

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