Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b12d15d7ef12d69…

MALICIOUS

PDF

251.0 KB Created: 2021-01-20 06:31:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 930f32fae928f948c9a06bb0048cda07 SHA-1: bb701d4886970fbf62521788de24e7ce53330cb1 SHA-256: 7b12d15d7ef12d6902203630e231781b736eb74a349652d0716f78704f94aa93
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 flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that likely leads to a phishing or malware distribution site. The document's content, though heavily obfuscated, suggests a lure related to a contest guide, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://jacksth.ru/123?utm_term=hawk+freedom+squadron+contest+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427091/normal_5f9b927e640b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412894/normal_5fea3a70ab5a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425723/normal_5faad965c07f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379359/normal_5f8a56c6a42da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490376/normal_5fe20dfe71baa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5ff39e0f588f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376369/normal_5fce48db9a9e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385421/normal_6007a6fe5ee51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378846/normal_5fa5542eafafb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499942/normal_5ffa444461def.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5fb526ef1be48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393044/normal_5fd2caca756ae.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/davawina/dufuvajenunefuwibezilu.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/79790657702.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/506_assignment_answer_in_english_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/ragnarok_m_eternal_love_assassin_dagger_guide.pdfIn PDF document text
    • http://gorefoverotiw.epizy.com/view_bookmarks_firefox_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/it_has_been_reported_that_synonym.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00039d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39D87 5552 bytes
SHA-256: 8fc2a677d46aa701817ffce4a29984cab45a166d15e0f430b55aa067943d1301
font_01_sfnt_off0003b064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B064 14272 bytes
SHA-256: 08d68bbeb530880ee7bd5e10d6505a653cf26d85e52089602e1c941deb6a5bd6

Open this report in the interactive analyzer, or submit your own file for analysis.