Malicious PDF — malware analysis report

Static analysis result for SHA-256 055b39907aa014a1…

MALICIOUS

PDF

60.9 KB Created: 2020-10-28 19:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 38c6cdf4f093ae548204bd32efa7e9ad SHA-1: 35c8803288651d0edf819132e6675dd52ff46ca3 SHA-256: 055b39907aa014a153f334bfd225d52a825126b44d85b43ad8720c6f0a6f3040
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of numerous external links suggests an attempt to redirect users to potentially malicious sites, possibly for phishing or malware distribution.

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.cc/123?keyword=los+personajes+reales+del+cartel+delos+sapos In PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/gebigikixijori.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/vorarevox-wujinabax.pdfIn PDF document text
    • https://zixotojene.weebly.com/uploads/1/3/4/3/134315054/makozutejukep.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/8836483.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/tebavu_mofevuz_punoxibera_gijipomole.pdfIn PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/b3f15256.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/kezedivalo-bolumukejufufik.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/2c21e350ba.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/nubagovovu-wanapudusawok-tizire.pdfIn PDF document text
    • https://benukozememig.weebly.com/uploads/1/3/4/4/134480731/rugetawut.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/beparinunij.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/ganofeloxo.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/a7850825515b5.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/tobobowu/cengage_chemistry_jee_mains.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/kudelixeniviroruwizurakun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db87ea92-9015-454c-a2ec-6627c08b18b2/bikaromoduju.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/javascript_tutorial_in_hindi_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/garuxob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3aa0b26-99ca-4f21-818f-3ee15f43f385/65852526198.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/buddenbrooks_lektreschlssel.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_off00009dca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DCA 5084 bytes
SHA-256: 6c93216fcdc95662eb913d2cfbf8d04e02985f4dc73d948fb4b8173ff0ba73d6
font_01_sfnt_off0000af2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF2C 17944 bytes
SHA-256: f9a7b4b821e8218dd60f3035e7fed1d90646aada8e320a87367f770a7f161b63

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