Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69dc45941e402b2…

MALICIOUS

PDF

89.4 KB Created: 2021-02-08 08:28:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a742508427ec67d1ba002816de20aee2 SHA-1: 897efbce38df9600f82821d4bac79990a03de4ab SHA-256: d69dc45941e402b209454723b922f5866a99dcbd24b4cd00ef378845c397c9a1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain that appears to host a malicious application download, disguised as a 'Soundcloud apk for android'. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into downloading and executing a secondary payload, likely a trojan or downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/aws?utm_term=soundcloud+apk+for+android+4.+2.+2 PDF link annotation
    • https://kaxitojuwomig.weebly.com/uploads/1/3/5/3/135302818/b526163.pdfIn PDF document text
    • https://sirutobij.weebly.com/uploads/1/3/0/7/130776617/7457256.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485939/normal_600618ef3cd1d.pdfIn PDF document text
    • http://rabisoluvilava.iblogger.org/48720492161.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/bekaxilujolu.pdfIn PDF document text
    • http://jafetezaki.iblogger.org/common_core_sheets_money_word_problems.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418993/normal_60088e8b0a26c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495402/normal_5ff87500ccb35.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://putiremupupunis.epizy.com/dubevogojugawufu.pdfIn PDF document text
    • http://nedilopasosugop.epizy.com/company_of_heroes_2.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/jobuvitonokovagovumo.pdfIn PDF document text
    • http://jefusebu.epizy.com/kanagupovebut.pdfIn PDF document text
    • http://nenimon.epizy.com/apprendre_le_japonais_application_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/social_science_class_10th_question_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/vajomilavabokipoxasisel.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/reporter_newspapers_atlanta.pdfIn PDF document text
    • http://zetesapoxus.epizy.com/tetolonila.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00012aa3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12AA3 25000 bytes
SHA-256: 1ab1f8c289b808115e78e7f972428615b569d227117b64ad86785fa85284e681
font_00_sfnt_off0000e93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93D 5388 bytes
SHA-256: 7b080945a388bd1e65d319205c2be7b495054acbf0331f760158828c630bef39
font_01_sfnt_off0000fba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA9 1964 bytes
SHA-256: 409ee9a3885541ffdc58d6bd2d6bfd260a46de59e4270c8c7780dd2af6cdbafe
font_02_sfnt_off00010502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10502 10916 bytes
SHA-256: 8bbf0c34e69aeec10da5f08093570152a9e1a48a6a0f99b4acffae7f1621f8ca

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