Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae3ec168796cc61a…

MALICIOUS

PDF

41.5 KB Created: 2020-11-04 02:28:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ae9b0dcbebbb7dec2fe6744038ed77a4 SHA-1: bde8e03a8abcb1b42c72af9d6e15309514414f27 SHA-256: ae3ec168796cc61ad60bfbc068f9e02a02d5d886f5b56d4363b3c46018d121c6
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content. The document body, though partially corrupted, contains the malicious URL, indicating an intent to redirect users.

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.
  • 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.
  • 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.link/123?keyword=what+is+the+purpose+of+bats In PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/6509436.pdfIn PDF document text
    • https://fupiloxeti.weebly.com/uploads/1/3/4/3/134380404/tuvemugejidibafi.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/1674588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_5f9910d241a0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412173/normal_5f9657f9eda29.pdfIn PDF document text
    • https://lisamotakix.weebly.com/uploads/1/3/4/3/134308999/2010948.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/rorives/advanced_aerospace_materials.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/eloy_detention_center_visitation.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/monster_legends_cheats_no_human_verification.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b517f5d8-7ffe-4cd4-98b0-d33658375b32/fake_utility_bill_template_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/korogo.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/polarity_therapy_workbook.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/74931006968.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_off00006549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6549 5108 bytes
SHA-256: 2de009b338d246b0d5b72ebfdbdab0cdcb50e84898a108a0e6148fa5d3e91e90
font_01_sfnt_off000076ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AE 10024 bytes
SHA-256: 28e35cee0990c7d5f4f96c0dc35ba5fbbcec2da2df62fd887a7d99635350b02c

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