Malicious PDF — malware analysis report

Static analysis result for SHA-256 acb9b99f13977984…

MALICIOUS

PDF

67.8 KB Created: 2020-10-09 04:30:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8ac04e5a238d57ba3c08cbf2dfc55b64 SHA-1: e5aa003bf2a0888f1219e5d64668aabc7e231546 SHA-256: acb9b99f13977984db5a0da99b1918116e3f1424cec185317faa65d8f0a98ab7
184 Risk Score

Malware Insights

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

This PDF document functions as a link farm, containing numerous embedded URLs that point to potentially malicious or disposable hosting sites. The document's content, including the title 'All mega evolution pokemon x', is likely a lure to encourage users to click on these links. The presence of a redirector link further indicates malicious intent to direct users to harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/pify?keyword=all+mega+evolution+pokemon+x In PDF document text
    • http://files.clearforkpublishing.com/uploads/1/3/1/4/131482931/d9a5b8f8c6280.pdfIn PDF document text
    • http://files.keepcalmandkickals.com/uploads/1/3/1/3/131381553/wijox_pawakarizososij.pdfIn PDF document text
    • http://ditakime.oileranimation.com/uploads/1/3/0/7/130775286/lazimunulikotutimake.pdfIn PDF document text
    • http://dideniz.iltermopolio.com/uploads/1/3/1/4/131482995/6442701.pdfIn PDF document text
    • http://files.ynamai.com/uploads/1/3/0/7/130739063/bolobofudal-givopa.pdfIn PDF document text
    • https://site-1038691.mozfiles.com/files/1038691/buwamoxutufix.pdfIn PDF document text
    • https://site-1036917.mozfiles.com/files/1036917/99555334605.pdfIn PDF document text
    • https://site-1037191.mozfiles.com/files/1037191/48922656771.pdfIn PDF document text
    • https://site-1039646.mozfiles.com/files/1039646/48132998077.pdfIn PDF document text
    • https://site-1040513.mozfiles.com/files/1040513/sawatisov.pdfIn PDF document text
    • https://site-1037909.mozfiles.com/files/1037909/63802140209.pdfIn PDF document text
    • https://site-1039583.mozfiles.com/files/1039583/46076939664.pdfIn PDF document text
    • https://site-1040665.mozfiles.com/files/1040665/zikepanase.pdfIn PDF document text
    • https://site-1043053.mozfiles.com/files/1043053/91088477737.pdfIn PDF document text
    • https://site-1039759.mozfiles.com/files/1039759/60699835459.pdfIn PDF document text
    • https://site-1039846.mozfiles.com/files/1039846/49159506599.pdfIn PDF document text
    • https://site-1036839.mozfiles.com/files/1036839/pawawuforanegas.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
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA642 5260 bytes
SHA-256: 6103c2ad71fd1e3a010948b7638e25e6f56c8759aad353a7814c09938845bdf3
font_01_sfnt_off0000b83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB83B 4928 bytes
SHA-256: c334ed5dc765789f5c005fe5e1f07b53514ba03a796992b027987b74e719bb6d
font_02_sfnt_off0000c8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F9 13164 bytes
SHA-256: ab2178a8792fd5b7cc83b5668622db402807b25f2a42f9d6ecc2c88682fb26e7
font_03_sfnt_off0000f347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF347 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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