Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bd43253ee661b29…

MALICIOUS

PDF

45.4 KB Created: 2020-11-05 04:03:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 973f7691e9b7322224ab41e185a4519b SHA-1: 3a0be42b2c240c497d14a89eb7c869615fe5e5d0 SHA-256: 6bd43253ee661b29ef96274358a72ec2f75ce9f90d1775dcd832089fd44ac624
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

The PDF contains a lure for a remote support tool, disguised as a Facebook app download. It embeds a URL that redirects to a malicious domain, likely to serve a secondary payload or facilitate further compromise. The ML classifier strongly indicated maliciousness, and the embedded URL is flagged as a redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://ttraff.me/123?keyword=facebook+app+download+for+laptop+computer In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426677/normal_5f9e0d1c3b99a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f87eb92decab.pdfIn PDF document text
    • https://gejovekozeja.weebly.com/uploads/1/3/4/4/134401956/7e829f85cbe61.pdfIn PDF document text
    • https://zijavenokin.weebly.com/uploads/1/3/4/3/134315340/1397097.pdfIn PDF document text
    • https://lififotepul.weebly.com/uploads/1/3/4/3/134339298/dimij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403820/normal_5f918df3a1bac.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/wogikokuzotaxa/begozijeliwi.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/numbers_in_binary.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/how_to_delete_venmo_app.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/japan_sage_market_salt_lake_city.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/attenuation_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/unblocked_games_bloons_super_monkey_2.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/mapuxejesivosawozax.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_off0000722c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722C 5372 bytes
SHA-256: bb30f5482e5d1188bbec08897ec93eee2a1522d9713b2ac472e0acf7f36fe316
font_01_sfnt_off00008473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8473 10560 bytes
SHA-256: 477af6b290c053cf5274389f42a0a7a1d87302192a4e39972cefe9d03205bba1

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