Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fba3f80e1aecb91…

MALICIOUS

PDF

73.8 KB Created: 2021-03-10 22:32:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 737fc02547634caf5502650cec088527 SHA-1: 2d8cfd5e4407aa603ddf7256a30fa27bd4cbfa96 SHA-256: 0fba3f80e1aecb9146ec0dff41c84ded3a0e1123a99d7eb086e1e33e1bbdde07
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9995

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
  • 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/aws?utm_term=bartle+real+analysis+solutions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418791/normal_5ffe6fa6ef54c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477373/normal_5ff504eba9c03.pdfIn PDF document text
    • http://vereffka.xyz/gewemepozolosasujuk8cbx9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414494/normal_603a1840a944c.pdfIn PDF document text
    • http://sreview.online/rebisikugabkiz6k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408879/normal_600eaa106a699.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366630/normal_5fef9db24378f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373240/normal_60244fcc74b5d.pdfIn PDF document text
    • http://opt15.ru/vba_programming_language_tutorialpk4ey.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497353/normal_5fdc9f0c93fbf.pdfIn PDF document text
    • http://monoga.space/analyse_af_reportage_artikelhsusz.pdfIn PDF document text
    • http://bcpzon4segurabetaviabcp.com/adobe_illustrator_draw_apk_for_pcmoazz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/paxuvagal/winolosidepazuxuxirejeji.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/the_great_gilly_hopkins_book_questions.pdfIn PDF document text
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_d7aaa6419fd74d9286f90aaf5fa5de33.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/podiveletegaxuzamufiposed.pdfIn PDF document text
    • http://xodojes.epizy.com/makurevijudexo.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/likefivepasujapirikeru.pdfIn PDF document text
    • https://32e47638-7206-44c1-ad53-5c6f9176402e.filesusr.com/ugd/e00742_310c4fbc88ca4acb9ce15d3a4319d168.pdf?index=trueIn PDF document text
    • http://lotirejotan.rf.gd/2825468931.pdfIn PDF document text
    • https://8d40832c-2e2b-4284-8151-bb35a16d80ac.filesusr.com/ugd/05d014_10493ead67e84bd7afe3df691e45dffc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/automatic_vs_manual_cars.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD588 4712 bytes
SHA-256: d0abcff9f7f3a47eba1d04f485198c9175523797a97031b47bc537121eef0b1e
font_01_sfnt_off0000e59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59B 11136 bytes
SHA-256: f812a50969d53bdd2f4ccde45f5c228605fdf3a1bd11d292cb39003fab759360
font_02_sfnt_off00010b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B99 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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