Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab2ee0e95be8fe08…

MALICIOUS

PDF

42.1 KB Created: 2020-10-05 08:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 270425564ceec1f282be2c136c7612ee SHA-1: e06e354a7b8b21d2ed4c2339d8ae1dda1bfc5375 SHA-256: ab2ee0e95be8fe08cc4c6cdfb799780fd055917c9a5865c6a7ab0b696db53afa
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by an ML classifier and contains numerous embedded links. One link points to known malicious redirector infrastructure, while others form a link farm hosted on disposable domains. The document body contains garbled text and what appears to be metadata, but the primary malicious activity is the redirection to external URLs.

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://cctraff.ru/pify?keyword=final+fantasy+14+blue+mage+spellbook In PDF document text
    • http://makav.noblecons.com/uploads/1/3/1/6/131606069/nozuni-kivonoxuvadodur-samed.pdfIn PDF document text
    • http://files.10sided.com/uploads/1/3/0/7/130739578/6165025.pdfIn PDF document text
    • http://files.gembalina.com/uploads/1/3/1/8/131856034/kisokes.pdfIn PDF document text
    • http://babive.rcnanorthbay.com/uploads/1/3/2/7/132712207/4337793.pdfIn PDF document text
    • http://files.38plus2productions.com/uploads/1/3/0/8/130813399/zuzufobexam-gepexekekotidak.pdfIn PDF document text
    • http://files.funkyiceclothing.com/uploads/1/3/0/7/130738969/3322513.pdfIn PDF document text
    • http://files.petemichels.net/uploads/1/3/0/8/130813458/zoketipupek_pakijogupujuza_zuvorujezul.pdfIn PDF document text
    • http://files.garlinstainedglass.com/uploads/1/3/2/6/132681517/donidir.pdfIn PDF document text
    • http://sexisogab.agilityredux.com/uploads/1/3/1/3/131398430/edf9779bc50b692.pdfIn PDF document text
    • http://files.templetonffa.org/uploads/1/3/0/7/130776073/4460813.pdfIn PDF document text
    • http://penukaxeg.mountainlaureltennisclub.com/uploads/1/3/1/0/131070317/8969730.pdfIn PDF document text
    • http://depukok.kanabheritagehouse.com/uploads/1/3/0/7/130775766/049b532.pdfIn PDF document text
    • http://files.hellobeautifulconroe.com/uploads/1/3/1/4/131437981/vilufugu-vuperupudabu-wudefo-zuwaxafusoder.pdfIn PDF document text
    • http://files.lifewideeducation.com/uploads/1/3/1/6/131606228/zifugarulemeni.pdfIn PDF document text
    • http://banum.pagesinkandpaper.com/uploads/1/3/0/7/130775195/penogopozot_jenodematoromet_tekupazi_teguxojabuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000669b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669B 5528 bytes
SHA-256: 815d7e38ae59beb4936fe98080998083213d0eba0f3a6a042a5b5d5bfde7923a
font_01_sfnt_off0000797d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x797D 10024 bytes
SHA-256: 824a6e6493136afdf6c52d64a97e535031ca962b0b2e9ffa5e57de6cba335c6f

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